Merken
Lecture 15. Getting to know the Gibbs Energy.
Automatisierte Medienanalyse
Diese automatischen Videoanalysen setzt das TIBAVPortal ein:
Szenenerkennung — Shot Boundary Detection segmentiert das Video anhand von Bildmerkmalen. Ein daraus erzeugtes visuelles Inhaltsverzeichnis gibt einen schnellen Überblick über den Inhalt des Videos und bietet einen zielgenauen Zugriff.
Texterkennung – Intelligent Character Recognition erfasst, indexiert und macht geschriebene Sprache (zum Beispiel Text auf Folien) durchsuchbar.
Spracherkennung – Speech to Text notiert die gesprochene Sprache im Video in Form eines Transkripts, das durchsuchbar ist.
Bilderkennung – Visual Concept Detection indexiert das Bewegtbild mit fachspezifischen und fächerübergreifenden visuellen Konzepten (zum Beispiel Landschaft, Fassadendetail, technische Zeichnung, Computeranimation oder Vorlesung).
Verschlagwortung – Named Entity Recognition beschreibt die einzelnen Videosegmente mit semantisch verknüpften Sachbegriffen. Synonyme oder Unterbegriffe von eingegebenen Suchbegriffen können dadurch automatisch mitgesucht werden, was die Treffermenge erweitert.
Erkannte Entitäten
Sprachtranskript
00:06
Bulgaria guys doing in
00:12
the ghettos midquarter the doldrums an article OK
00:28
this is a Chapter 16 topic were really cranking away on Chapter 16 years edging their way toward the end of thermodynamics which I hope
00:42
will come probably in the middle of next week now we we
00:53
host the quiz scorers this morning this is the hardest quits went into hard 1st question is pretty easy and so
01:13
these guys carries these guys get these there's a few scenes here we usually have hardly any
01:18
CDs OK quiz fighters
01:23
Friday the 1st 2 were
01:27
supposed to be easy the 1st to prosper in this case the 2nd 1 was actually not so it it was the body temperature ones OK I'll suppose the key
01:39
conditions "quotation mark there so we won and was even sweeter is we
01:50
beat St very very sweet
01:55
I'm always amused by the fighting the Adidas the most domiciled in animal that we know of in the animal kingdom but to dress them up for the athletic department security is of fierce there's no such thing as a
02:12
fierce and even nature the not known to be fears but the focus
02:22
so we're going to review a little from Friday when that same Wednesday we're going to talk about how the Gibbs free energy varies with temperature and pressure will do a couple of examples just sort of easy ones to ease into this subject OK we'll do a bunch more examples on Wednesday all right so on Friday nite Wednesday we said Look there's there's 3 types of systems OK and uniquely for this guy right here it's an isolated system there's no energy or matter exchanged with the environment the surroundings we don't have to consider anything except the system when we think about the spontaneity of processes that occur within it OK it's blocked after the surroundings it doesn't even know about and so we can say any process that has an entropy positive entropy change is going to be a spontaneous process for an isolated systems we even have to
03:27
think about the surroundings they're not part of our but process but we don't have isolated systems in chemistry too often but there are almost always in communication with the environment and so we have
03:42
to consider open systems and closed systems as well and in most cases because the risk communication with the surroundings it's that whole line to be surroundings plus system that matters
03:57
OK in terms of figuring out of this
03:59
process a spontaneous noticed that the focus is totally on entropy where were not
04:04
saying anything about the energy the energy to do anything it wants but were only focusing attention on the entropy To understand where these processes are spontaneous or not OK so
04:16
we gotta have this term in here for the surroundings we didn't need it for the isolated system OK so now just dual algebra were going to move the surroundings over the righthand side put a negative sign in front of it and then we're going to remember that DS is miners DQ oversee and so we can make that substitution for the surroundings right here and then we discover remember that she was a conserved quantity in other words if plus this he entering the system that he'd had to come from the surroundings and so the surroundings has to be mine is the key this conservation of Q
04:54
but and then we have to think back
04:58
remember that DU is DWP was DQ and so we can just offered the expression of do you might as the W and if applied that guy in 4 D 2 we get this guy right but at and if we consider all the pressure volume workers devalues PTV OK and so then we a multiplied by T. surroundings and moved over to the left hand side so we get rid of this the surroundings now now it's over here and we just have to you PDB we're going to drop that since subscript you don't see a
05:39
subscript just assume we're talking about the system OK so this
05:45
is the pink equation finally took a for steps to get there from conservation of entropy were not conservation of
05:53
entropy from entropy dictating which processes spontaneous not but we kept coming back to this speak equation on Friday In deriving different from an
06:06
anemic state functions from but the fact we showed that if the process occurs under conditions of constant volume and constant entropy then it's the internal energy but that tells us for the process spontaneous or not and if instead the process occurs under conditions of constant pressure and entropy why it's the and help me that's going to tell us
06:33
whether the process spontaneous enough but unfortunately we don't encounter these
06:38
2 sets of conditions very often it's virtually never the case that the entropy is constant if you're chemist can ask you know how do you do that How do you do an
06:49
experiment with constant entropy I don't know the answer so when you're doing an experiment anyone understand whether it's spontaneous or not the chemistry that you're looking at it's unlikely that you're going to be paying
07:01
attention to these 2 variables to figure that out they're not going to help guide your
07:06
decisionmaking process and figuring out whether you're chemistry the spontaneous or not that's what we care about here so we need some other
07:16
state functions and we talk about 1 right the Helmholtz energy all right in chemistry temperature is frequently constant but not the entropy by constant temperature lots of constant temperature chemical processes that we can think about so let's consider the case were indeed T is 0 and the volume is 0 we're going to need
07:42
for 2 things to be 0 otherwise we're not going to end up with the state function and so will also
07:49
define a new state function 8 which is going be called the Hamilton energy it's going to be defined as the internal energy minus 2 yes and so if we take a derivative now to get DEA on the lefthand side were going to get DU and would have DTS and so we can splitthat into 2 terms Due minus STT and then we can just Salford you this expression DU is going to be equal to DEA class TVs class as the the and of the next thing that we do is we
08:24
plug this thing into the pink equation but this expression for
08:30
do you into the pink equation and then look for the terms that are going to cancel rights that TVs as the team and art expression for pressure volume works
08:45
on the peak equation became the
08:47
1st thing that we notice is that we get TDS here we get TDS here now these 2 teams are different in principle this is the chief of the surrounding facility the system but as these as we converge
09:01
on equilibrium these 2 temperatures will become very very close and under those conditions we can
09:07
expect these 2 terms to cancel for and then under conditions where we said Didi is 0 devious 0 there's we can cancel that term indeed the can consulate that term and were just left with DEA there's nothing else left and so it's going be DAD is less than 0 and so this Hamilton energy is going to be
09:35
a state function that we can use to tell whether whether the chemistry that we care about His spontaneous or not when temperature and
09:43
volume are held constant and in the laboratory we can enforce that limits we we could do an
09:51
experiment a constant temperature maintaining the volume constant let the pressure do whatever it wants OK we need 1 of these things right it's
10:00
got defined volume is built like a tank in so even if the pressure changes a lot we're going to enforce constant pressure in principle it's the
10:10
Helmholtz energy that will tell us whether reaction in this car bomb is going to be spontaneous enough but we would want to know if we do an experiment
10:21
in here we would want to use the Hamilton a to figure out whether spontaneous no if you do wonder
10:31
if you do undergraduate research ,comma people done undergraduate research
10:36
How many people see apart
10:40
right few who you guys were free
10:42
all work the same person he's got a problem in his left OK it's not completely it's impossible that you would use 1 of these things right they opt in rather common use but I would say probably 99 . 9 per cent of all the chemistry that were likely to do is not going to be in a part but 99 . 9 per cent so we need a different
11:18
from anemic function Hamilton is fine but constant volume is inconvenient for us to use because
11:24
we needed part about do it in many cases you can fit even more
11:30
useful to make petitions but prediction of processes occurring constant pressure and temperature because that is dead easy but we live in an
11:37
environment of clause constant OK and so we can do chemistry that's all open to the environment and make predictions about whether spontaneous and To that would
11:49
use something called the gives energy right we're going to define it as age minus 2 yes OK wouldn't do the same kind of algebra we did for DG's DH miners DTS and so we've got to terms here now and then we're gonna think back to Friday when we wrote an expression for DH percentages do you plus part of the debate OK something just for that and for DH here now we get this long saying here that's equal to the OK and so once again we're just gonna are put all this other stuff on the hand side and then once we got the you just plug in the pink equation there it is put all of this stuff in 4 D you get this long thing here OK and some of these terms are going to start canceling for us as usual previously these pleading right remember these 2 pressures are not in principle identical that's the system pressure that's the surroundings pressure spot but in the limit of
13:12
equilibrium they will be the
13:16
right STDs same idea there and then because we're talking about GE were going to make key constant so really is that and so really is that guy so everything cancels out here except the gene which is going to be less than or equal to 0 and so that's going
13:40
to be the state function that we're going to Wunnicke on most of the time as chemists right now physicist some other
13:49
kind of scientist these other state functions might be more important to you under other sets of conditions but for
13:55
Khamis it's all about the Gibbs free energy the Gibbs energy we not supposed to call at the Gibbs free energy anymore it's just the Gibbs energy OK now I know it's tedious but this is important right this is actually 1 of the more important things in thermodynamics that we need to be able understand
14:18
right here's where we're doing chemistry and this guy right here were opened to the atmosphere and the gets function is going to tell us whether this blue stuff here is the react spontaneously but we don't need the
14:33
car so today last Friday we've
14:43
taken a consideration we've taken the condition for spontaneous change for not isolated systems we consider the total entropy change system plus surrounding that's going be greater than equal to 0 and from that we do arise all of these different conditions that apply for these different constraints volume and entropy temperature in volume pressure entropy temperature and pressure reviews for different and what I told you today is like these 2 are not super useful to us as Khamis these 2 are more useful and this 1 is way more useful than that but we drive these all
15:24
we didn't have to assume anything proprietor that it's hard but now
15:35
these conditions here also serve to tell us whether the system is proceeding toward equilibrium it not only
15:43
tells us for where the chemistry spontaneous it'll tell us whether there systems proceeding towards equilibrium were not for example 1
15:57
planting here is the gives energy for some chemical process in on this accident on this axis the reaction quarter so this represents reactants right here in this represents products this is 100 per cent products this is 100 percent reactants but as you move along the axis in this direction were converting reactants into products but that's what I mean by a reaction coordinate sometimes will call this reaction coordinate X or color OK reactants getting converted the
16:33
products very generic what does DG that should be clean and team on of the lessons 0 orders by so 1st of all this difference here between the reaction products product gives functions and that's the delta G reaction makes sense now
17:01
let's consider a process and starts right here in ends right here but we can ask is such a process committees spontaneous or not what we have a criterion here if we just change that the Dougherty
17:17
we know DG should be less than 0 OK so we
17:23
can say Gee finally minus G. initial is that djp final minus initially that could be less than 0 or greater than 0 we then yeah it's a
17:40
small number of mine is a bigger number and Seoul that difference is going to be negative isn't it fighting and so we would predict that the spontaneous process yes DG at constant UP is less than 0 what about this guy the same conclusion what about this guy no the final by
18:07
initial is going to be a positive number now quite so that's not going to be a spontaneous process going from here to here no all right but what about the girl yes final minus initial is going to be negative again so that should be spontaneous right so basically what we're concluding is that if you're over here where adult spontaneously downhill in this direction and if you over here you go spontaneously downhill in this direction and that this minimum here In the gives
18:42
energy going to they indicate the equilibrium position of this reaction but it's supply were
18:51
DG already acts for X is now my reaction poured is equal to 0 but at that point there is no more driving force for spontaneous change work at
19:01
equilibrium OK now his 4th
19:11
America potentials you aged 8 and Gigi will be formed by far the most important to us yes yes yes Howard G. depend on temperature the
19:23
White House as a whole as the Gibbs energy depend on temperature well that's a rather important thing for us to understand because as chemists if you want accelerator reactions g is going to tell us where the reaction spontaneous or not or I want understand how temperature will influence that spontaneity
19:43
jeez equal the age minus yes we know that and so we can take the derivative immediately DGTGTD even I can take this derivative I get mine disaster became so what this tells us is to thanks 1st of all since we know it s is always a positive quantity there's no such thing as negative entropy S is always a positive quantities right that tells us that GE has to decrease with increasing temperature because that derivative is always going to be negative but that's kind surprisingly Gibbs energy is going to go down as the temperature goes up that's
20:28
counterintuitive don't all energies go up when you increase the temperature not this 1 but the gives energy goes
20:38
down as you increase the temperature not only that but the rate of change of GE with temperatures greatest persistence having higher entropy but the
20:51
higher the entropy the greater the change in G is going to be with temperature but what kind of systems of high interpol gasses when laser pointers
21:04
going gasses at the highest
21:07
interest and so the rate of
21:10
change of the free energy with temperature is going to be the highest then liquids and solids it's also the lowest interview OK so this plot His right your Chapter 16 gasses the biggest slope right here's the gives energy on this axis Hughes temperature it's going down for every single 1 of these guys it's going down or it's going down at a rate that depends on the state gasses show the largest decrease in Gibbs energy with temperature liquids next solids show the least OK
21:52
so couple things there's surprise me 1 thing that's surprising for sure
21:55
is that the gives energy goes down with temperatures right it's an
21:59
unusual energy business that goes down with but OK so
22:08
we can evaluate his derivative and then we can go back to this equation right here and we can just say we can solve reminders that by myself my Cesya unmitigated United States over tea just solving for minor says in an equation right there OK so that DG over tea at constantly G minor state of but and then we can rearrange that just put this in the 2 terms moved your party to the left hand side but I don't know why we actually did that the fastest don't think we need this result here right maybe we'll come back to this in the 2nd but let's just look at this for a 2nd this is a derivative of geometry I know that has anything to do with this just driven during if I use them "quotation mark should rule to evaluate this derivative I've got 1 over tea times during the Beijing with respect to tear that GE times derivative tea with respect to the right 2 terms of my cultural expansion but OK now the derivative of 1 over tea is just minus 1 of T square right OK so that's the derivative right there In this guy we factor out 1 over tea unipolar 1 over tea edible these 2 terms and put it right there all right now I've got this expression here and that is just the entropy by the derivative of the gives energy with with respect to T constantly that's the entry OK like implied that end to this expression right here I stood edgy over tea and then I can move maybe that's why I did it but no the data there all right is just plugging in for GE from that equation to slide to go but that OK and so this is s over tea this is as over cheese or going to get rid of the ass over tea were just beloved H over E squared all right and this is your equation 15 . 6 2 be this is the game gives Helmholtz equation which is
25:00
important because it allows us To Measure H by looking at the temperature dependence and the temperature
25:11
dependence of GE is something we're going to be able to measure experimentally all right so we can get H directly
25:18
from that during this conceptual gives Helmholtz equation now if this is a Delta age methodology this equation still this so let's ask
25:37
some questions about the gives function we already asked a question about the temperature dependence was begins punching goes down with increasing temperatures surprising the rate at which it goes down depends on the entropy the higher the entropy the faster the temperature rate of change the gives function what
25:56
about fractures right we've got this expression here for danger at and if we want to look at this at constant temperature we can say DTD 0 right and so that terrorist is going to go away with that DG is the deep insult to find out what the free energy free and the Gibbs energy change there's the gives energy at the final minus the gives energy at the initial I just integrate this BTP right from initial final pressure if I know what that is if he's Imola quantities of course is going to be in and Mary down there and then and there might all more quantities and so this equations that super useful to us unless we now how this volume changes with pressure but the 1 thing that's obvious as 4 phases like solids and liquids that are essentially in compressible the end virtually constant independent approaches but there's not much compressibility of a solid phase or liquid phase right and so there isn't much pressure dependence of the and so we can ride a simpler expression if we can pull the out into the front of the cerebral signed by because of constant then the animal just turned into and we've got an extremely simple expression that allows us to evaluate the pressure dependence on that gives energy it's just the molar
27:30
volume trends and change in pressure
27:34
but so if you love once again this is the gives energy on this vertical axis and the the pressure on the horizontal axis by and for liquids and solids you get virtually all horizontal lines but because the increase in
27:55
compressible but the volume doesn't depend on pressure very strongly but
28:05
interestingly as the pressure gets higher the gives function goes out a little bit right with gasses there's a much stronger effect gives energies against depend strongly on the pressure and you might expect them to because gasses are far from being compressible are highly compressible I saw the
28:27
molar volume is highly dependent on pressure consequently the Gibbs
28:31
energy is highly dependent on pressure in fact gives energy goes out with increasing pressures now we can actually figure out what this is for for ideal gasses is very readily right we can to substitute for VM from the ideal gas equation move the RTL front right so that's been a move front we've got 1 over please swordsman locked final over P. initial that is the equation that describes the
29:02
change the Gibbs energy for an ideal gas as a function of pressure change the pressure we have very simple equation polish going equations page for quiz 5 with this project this
29:24
was my laser pointer too cheap to buy new batteries for please please but so this is what the volume is doing as a function of pressure for an ideal gas right it's following this purple lining here OK so we want to evaluate this integral we're going to be integrating from some initial pressure to some final pressure this is the area underneath this curve so this is this Gibbs energy right and it's obvious that as we make Pierre higher and higher and higher this integral is going to get bigger
30:07
right and so it's obvious that the
30:11
gives energy is going to go up just based on that but now we can define a standard Muller Gibbs free energy artwork constantly
30:26
that should be toward freeing here were trying to get rid of the word free should
30:30
be the standard Muller gives energy right that's defined at a defined pressure which is 1 ball yeah that's how we define the standard Gibbs energy or the standard the standard anything
30:46
of it says standard it's 1
30:48
bar OK so in this case we can write this expression it just follows directly from this guy right here except that we've now defines a particular gives energy that applies to the pressures 1 boy OK so this initial it is now that guy OK so all this plot shows here's the molar gives energy and here's the pressure and what we said earlier Is that as I increased P after this I'm going to make a cynical larger so that tells
31:24
us the gives energies gotta go up with increasing pressure right what
31:29
I on the slide right here is that we're going to we're going to make according to define as special Gibbs energy at 1 bar and so that's what this becomes like this becomes 1 Bob mentioned this is 1 bar integrating the higher pressure from that right so the same
31:51
intuitive picture applies right if we move this higher pressure the
31:55
intervals going to go up and that's why this plot is going up up up up up you can see that it's it's got downward curvature said downward curvature because here there is a big change in the Gibbs energy smaller smaller smaller This has got upward curvature so if we can integrate this guy increases in pressure going have a smaller progressively smaller and smaller effect on the Gibbs energy and that's what we're seeing here that's why there's downward curvature of this guide parts of the Gibbs
32:30
energy goes down as we increase the pressure end up as we increase so it goes down as we increase the temperature an opposition increased the pressure is all this confusing absolutely amazing if you don't
32:50
think so they're just not paying attention focus Judaism examples but
33:05
the change in the gives energy at 25 grams of methanol mass density 0 . 7 9 1 grams per cubic centimeter when the pressure is increased Eisele thermally from 112 pastels 200 mega pastels what should say calculate the change Gibbs energies Noel Nova but
33:29
calculate gives energy right
33:31
when we said subjective methanol to a change in prices that the change by a factor of a thousand it's a big change but so the first year
33:43
1st got thought process should be it's a liquidating compressible it's use the simplest equation we can but the simplest equation for any liquid or solid is just the end times dealt p the End
33:57
times dealt the by I immediately get change the Gibbs energy but this is what I did OK and so far I'm willing to give up these Moeller forget Moeller understanding calculate the difference but it is asking for the change in the law gives energy disaster for the change in the gives
34:17
energy right so here I need
34:22
the volume of my 25 grams of methanol right there is the density and so I can calculate the volume that's 10 the 5 that's attended the 8 so this my factor of a thousand and so I plug these numbers and I get 3 . 1 5 7 times 10 malign cubic centimeters per cubic centimeter pastels
34:44
right that's the delta G that I get
34:46
and I don't like these units but I can convert them later now sides a converted right here right through below summoned his mind centimetres cube pastels No I don't like that and so I can use the definition for here's the conversion factor for Pascal stadiums there's a conversion factor from cubic centimeters a later by not that leader atmospheres right and so that I can use the ratio between the 2 different To do the unit conversion to get jewels rights tedious right but when I do that I get 3 . 1 5 7 times 10 to the 3 jewels nor roughly 3 Killer but that's what the change in the
35:36
Gibbs energy is going to be now when I
35:41
looked up the answer in the key and had something far fancier all right if you use the Isadora compressibility of methanol which you can look at the back your book that's the isothermal compressibility is 1 . 2 6 and minus 9 per Pascal well for goodness sakes we go through and do it
36:02
with the isothermal compressibility and see how different our answers will be right isothermal
36:08
compressibility is defined by equation 14 .period 5 9 is 1 over the Times the derivative with pressure constant temperature the Wikinews linear rise this differential finalized initial because we know the change in volume is going to be small pressure difference is not small actually but we're in clear eyes that also OK so make 2 approximations organization initial
36:35
volume is just the final volume also cited change much so that they become the online so I know what that is right on the final pressure is much much larger than the initial pressure and so that difference right there I can just approximated the final pressure right the initial pressure is just a rounding error on the final pressure literally OK so that the equation of menus and and so I just do a little algebra with this into 2 terms now sell for the applicant this expression right here which can be further simplified amid this expression right here and then when I gotta do sadly isn't great that some replied that informs the UN and the but
37:23
itself that's what I did here I can calculate what is VI is that's the mass that's the density OK and here the 2 derivatives I'm going to do and that actually pull this out front and I'm going to take a derivative of DPA that's pretty easy to do and then but property times and derivative of P R I and so I can run these 2 In a rose all right this is just gonna be 10 to the minus 10 of the 5 this guy is 1 half cavity he squared and when I plugged in immigration limits into these 2 and I derivatives by this guy and being almost 10 years at that surrounding they subtracted from him and these are the results of these other 2 terms OK and so I calculated 2 . 9 6 times 10 to the 3 Jewels which is also about 3 retailer jewels but if I do this carefully considering the isothermal compressibility of methanol I get a slightly different answers it's different by 1 part in 30 roughly
38:42
right that's wrong that's right but pretty darn close to being right so it depends on the
38:53
precision that you need on the quiz that might be good enough
39:00
unless this is also an answer that would be cruel wouldn't 1 part 30 difference and the answer is no I would never do that the ruins the
39:13
entity that as a former compressibility makes it a little bit more complicated OK so the last thing to say today is
39:22
that In this may be completely obvious to everybody says that if you wanna know the standard Gibbs free energy for a reaction like this reaction right here what you do is you look up on the table gives standard that free shouldn't be there again it gives the energy of the staff the gives energy this stuff in the gives energy of stuff and the standard energy difference is that mine that plus that but I can look
39:57
this up in tables now if I don't have a table of Gibbs energies wobble again tabled entropy a mantelpiece which is not terribly uncommon he got his this equation right here you can look up these and all these you can look at these entropy is and if you know the temperature at which the reaction is happening you can figure out
40:17
With the reaction is spontaneous at that temperature or not you can look at the delta G this is the delta G reactions so in
40:26
the case of a we've got this deltas of R. H. with that notation means that are is the reaction rate this is the Templeton change for the reaction this
40:44
is the Delta each formation but that's what we're going look up in the table what we want is 1 look at look at
40:53
look up the Delta each formation for all the reactants and all the products at the reactant Delta each formation subtract sort that product Delta each formations subtract the reactor Delta each formations get the Delta each for the reaction
41:11
OK this is 0 0 Top means standards what is the pressure equals 1 bar temperature equals to 98 . 1 6 K that look that
41:28
what is that Justice Documenta coefficient in front of these so that would be 1 1 and wine In this case OK we need to
41:40
do the same thing for the entropy and here is the end of the year the entropy we still get stuck metrical fishes for analog of the Standard and trapeze products minus reactions so we can do that use I've done by golly that's for this guy right here but that which is what prokaryotic gossip
42:14
and these 2 guys are for those due in no particular order OK so the delta H is just that the evaluation of that Of all of those numbers OK and you can do the same thing for the entropy some a table standard and peace do exactly the same thing and the delta G then is just the Delta age minus the Times adult Esper we put plug the Terry are we get 72 . 6 killer jewels from all of the delta G we conclude that
42:47
this reaction should be spontaneous at this temperature with the way this Oregon
43:11
105 other
43:14
questions about this stuff I know it's not riveting start I will do so hopefully it's going to get more interesting I think
00:00
Besprechung/Interview
GibbsEnergie
Topizität
00:40
Mühle
Besprechung/Interview
GibbsEnergie
Wirtsspezifität
Computeranimation
01:18
Bukett <Wein>
Körpertemperatur
Besprechung/Interview
Cadmiumsulfid
Krankheit
Gezeiten
Süßkraft
Computeranimation
01:55
Azokupplung
Körpertemperatur
GibbsEnergie
Chemischer Prozess
GibbsEnergie
Setzen <Verfahrenstechnik>
Gallium
Selbstentzündung
Bildungsentropie
Druckausgleich
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Computeranimation
03:26
Chemische Forschung
Mühle
Chemischer Prozess
Selbstentzündung
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Computeranimation
04:04
Bodenschutz
Mineralbildung
Besprechung/Interview
Chemischer Prozess
Gletscherzunge
Selbstentzündung
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Bodenschutz
04:51
Genexpression
Druckausgleich
Computeranimation
Bodenschutz
05:38
Chemischer Prozess
Krankheit
Selbstentzündung
Gangart <Erzlagerstätte>
Bildungsenthalpie
Selbstentzündung
Druckausgleich
Systemische Therapie <Pharmakologie>
Chemischer Prozess
06:33
Chemische Forschung
Herzfrequenzvariabilität
Single electron transfer
Pharmazie
Krankheit
Koch
Selbstentzündung
Selbstentzündung
Chemischer Prozess
07:15
Chemische Forschung
Körpertemperatur
Chemische Forschung
Computeranimation
07:48
Hexachlorcyclohexan
Vorlesung/Konferenz
RWE Dea AG
Chemische Forschung
Genexpression
08:26
Mischgut
Körpertemperatur
Chemischer Prozess
Krankheit
Vorlesung/Konferenz
TPD
Selbstentzündung
Genexpression
Druckausgleich
09:06
Chemische Forschung
Chemischer Prozess
Krankheit
RWE Dea AG
09:41
Druckbelastung
Laichgewässer
Reaktionsführung
Körpertemperatur
Chemischer Prozess
Tank
Glimmer
Selbstentzündung
Repression <Genetik>
Druckausgleich
Computeranimation
10:21
Druckbelastung
Chemische Forschung
Laichgewässer
11:15
Chemische Forschung
ClausVerfahren
Körpertemperatur
GibbsEnergie
Chemischer Prozess
Selbstentzündung
Funktionelle Gruppe
Elastin
Körpertemperatur
Druckausgleich
Küstengebiet
Chemischer Prozess
Computeranimation
11:48
Mineralbildung
Altern
Fülle <Speise>
GibbsEnergie
Chemischer Prozess
Genexpression
Druckausgleich
Küstengebiet
Systemische Therapie <Pharmakologie>
Computeranimation
13:16
Druckbelastung
Gen
Single electron transfer
Pharmazie
Krankheit
Vorlesung/Konferenz
Computeranimation
13:54
Druckbelastung
Chemische Forschung
Fülle <Speise>
GibbsEnergie
Besprechung/Interview
Chemischer Prozess
GibbsEnergie
Funktionelle Gruppe
Lactitol
Körpertemperatur
ProteinglutaminGlutamyltransferase <Proteinglutamingammaglutamyltransferase>
Computeranimation
14:32
Krankheit
Körpertemperatur
GibbsEnergie
Krankheit
Selbstentzündung
Bildungsentropie
Selbstentzündung
Druckausgleich
Systemische Therapie <Pharmakologie>
Computeranimation
15:22
Chemische Forschung
GibbsEnergie
Krankheit
Vorlesung/Konferenz
Selbstentzündung
Bildungsenthalpie
Systemische Therapie <Pharmakologie>
15:56
Chemische Forschung
Chemische Reaktion
Sense
Reaktionsführung
Biskalcitratum
Koordinationszahl
Farbenindustrie
Delta
Funktionelle Gruppe
Chemischer Prozess
Computeranimation
16:55
Besprechung/Interview
Chemischer Prozess
Selbstentzündung
Selbstentzündung
Chemischer Prozess
17:33
Chemischer Prozess
Selbstentzündung
Chemischer Prozess
18:41
Aktionspotenzial
Körpertemperatur
Reaktionsführung
GibbsEnergie
Selbstentzündung
Körpertemperatur
Aktionspotenzial
19:21
Altern
Derivatisierung
Reaktionsführung
Körpertemperatur
Elektronegativität
Pharmazie
Bildungsentropie
Selbstentzündung
Körpertemperatur
Vulkanisation
Computeranimation
20:28
Oktanzahl
Körpertemperatur
Sterblichkeit
Körpertemperatur
Systemische Therapie <Pharmakologie>
Computeranimation
Gasphase
21:00
Oktanzahl
Körpertemperatur
GibbsEnergie
Sterblichkeit
Körpertemperatur
Gasphase
Gasphase
21:50
Derivatisierung
Körpertemperatur
Derivatisierung
Besprechung/Interview
GibbsEnergie
Temperaturabhängigkeit
Diamantähnlicher Kohlenstoff
Labkäse
Körpertemperatur
Tee
Genexpression
Kettenlänge <Makromolekül>
24:59
Altern
Körpertemperatur
Chemischer Prozess
GibbsEnergie
Temperaturabhängigkeit
Computeranimation
25:36
Molvolumen
Zugbeanspruchung
Phasengleichgewicht
Phasengleichgewicht
Oktanzahl
Besprechung/Interview
Setzen <Verfahrenstechnik>
Druckausgleich
Genexpression
Sprödbruch
Druckbelastung
Körpertemperatur
Molvolumen
Gletscherzunge
Initiator <Chemie>
Funktionelle Gruppe
Hydroxybuttersäure <gamma>
27:29
Druckbelastung
GibbsEnergie
Druckausgleich
28:02
Druckbelastung
GibbsEnergie
Besprechung/Interview
GibbsEnergie
Molvolumen
Gletscherzunge
BoyleMariotteGesetz
Funktionelle Gruppe
Druckausgleich
Gasphase
BoyleMariotteGesetz
Gasphase
29:02
Druckbelastung
Querprofil
Besprechung/Interview
Funktionelle Gruppe
Druckausgleich
30:07
Druckbelastung
Molvolumen
Zuchtziel
GibbsEnergie
GibbsEnergie
Zuchtziel
Druckausgleich
Computeranimation
30:45
Druckbelastung
Molvolumen
Zuchtziel
GibbsEnergie
Druckausgleich
Genexpression
Computeranimation
31:24
Druckbelastung
Molvolumen
Zuchtziel
GibbsEnergie
Sammler <Technik>
Besprechung/Interview
GibbsEnergie
BoyleMariotteGesetz
Druckausgleich
Gasphase
Computeranimation
Erdrutsch
32:29
Druckbelastung
Körpertemperatur
GibbsEnergie
Massendichte
Druckausgleich
33:05
Druckbelastung
Sonnenschutzmittel
Methanol
Methanol
GibbsEnergie
Massendichte
Druckausgleich
Computeranimation
Kubisches Gitter
Massendichte
33:42
Druckbelastung
Zugbeanspruchung
Methanol
GibbsEnergie
Massendichte
Chemischer Prozess
Computeranimation
34:16
Druckbelastung
Sonnenschutzmittel
Methanol
Methanol
Krebsrisiko
GibbsEnergie
Massendichte
Delta
Computeranimation
Edelstein
Konvertierung
Kubisches Gitter
35:34
Druckbelastung
Zugbeanspruchung
Methanol
Methanol
GibbsEnergie
Massendichte
Adsorptionsisotherme
Computeranimation
36:07
Biologisches Lebensmittel
Zugbeanspruchung
GibbsEnergie
Erzgang
Druckausgleich
Genexpression
Computeranimation
Druckbelastung
Derivatisierung
Methanol
Körpertemperatur
Initiator <Chemie>
Massendichte
Periodate
37:18
Druckbelastung
Zugbeanspruchung
Derivatisierung
Methanol
Methanol
Chemische Eigenschaft
GibbsEnergie
Massendichte
Adsorptionsisotherme
Edelstein
38:39
Druckbelastung
Methanol
Bukett <Wein>
GibbsEnergie
Massendichte
Computeranimation
39:12
Zuchtziel
Zugbeanspruchung
Chemische Reaktion
Fülle <Speise>
Reaktionsführung
GibbsEnergie
GibbsEnergie
Bildungsentropie
Zuchtziel
Computeranimation
39:52
Zuchtziel
Chemische Reaktion
Körpertemperatur
Reaktionsführung
GibbsEnergie
Bildungsentropie
Delta
Computeranimation
40:26
Zuchtziel
Chemische Reaktion
Spezies <Chemie>
Oktanzahl
Reaktionsführung
Chemischer Reaktor
GibbsEnergie
Setzen <Verfahrenstechnik>
Bildungsentropie
Delta
Computeranimation
41:08
Fleischersatz
Zuchtziel
Reaktionsführung
Spezies <Chemie>
GibbsEnergie
Zuchtziel
Druckausgleich
Computeranimation
Laichgewässer
Chemische Reaktion
Körpertemperatur
Bildungsentropie
Vorlesung/Konferenz
Gletscherzunge
42:08
Altern
Zuchtziel
Chemische Reaktion
Bildungsenthalpie
GibbsEnergie
Bildungsentropie
Delta
Zuchtziel
Disulfiram
Edelstein
42:46
Zuchtziel
Chemische Reaktion
Fülle <Speise>
Reaktionsführung
Körpertemperatur
Besprechung/Interview
GibbsEnergie
Bildungsentropie
Bukett <Wein>
Computeranimation
Metadaten
Formale Metadaten
Titel  Lecture 15. Getting to know the Gibbs Energy. 
Alternativer Titel  Lecture 15. Getting to Know The Gibbs Energy. 
Serientitel  Chemistry 131C: Thermodynamics and Chemical Dynamics 
Teil  15 
Anzahl der Teile  27 
Autor 
Penner, Reginald

Lizenz 
CCNamensnennung  Weitergabe unter gleichen Bedingungen 3.0 Unported: Sie dürfen das Werk bzw. den Inhalt zu jedem legalen und nichtkommerziellen Zweck nutzen, verändern und in unveränderter oder veränderter Form vervielfältigen, verbreiten und öffentlich zugänglich machen, sofern Sie den Namen des Autors/Rechteinhabers in der von ihm festgelegten Weise nennen und das Werk bzw. diesen Inhalt auch in veränderter Form nur unter den Bedingungen dieser Lizenz weitergeben. 
DOI  10.5446/18948 
Herausgeber  University of California Irvine (UCI) 
Erscheinungsjahr  2012 
Sprache  Englisch 
Inhaltliche Metadaten
Fachgebiet  Chemie 
Abstract  UCI Chem 131C Thermodynamics and Chemical Dynamics (Spring 2012) Lec 15. Thermodynamics and Chemical Dynamics  Getting to Know The Gibbs Energy  Instructor: Reginald Penner, Ph.D. Description: In Chemistry 131C, students will study how to calculate macroscopic chemical properties of systems. This course will build on the microscopic understanding (Chemical Physics) to reinforce and expand your understanding of the basic thermochemistry concepts from General Chemistry (Physical Chemistry.) We then go on to study how chemical reaction rates are measured and calculated from molecular properties. Topics covered include: Energy, entropy, and the thermodynamic potentials; Chemical equilibrium; and Chemical kinetics. Index of Topics: 0:02:42 Entropy in Isolated and Unisolated Systems 0:06:09 Enthalpy and Internal Energy for a Spontaneous Process 0:07:20 Helmholtz Energy 0:09:57 Parr Bomb 0:11:16 Gibbs Energy 0:24:40 GibbsHelmholtz Equation 0:30:19 Standard Molar Gibbs 