Merken

Lecture 15. Getting to know the Gibbs Energy.

Zitierlink des Filmsegments
Embed Code

Automatisierte Medienanalyse

Beta
Erkannte Entitäten
Sprachtranskript
Bulgaria guys doing in
the ghettos mid-quarter the doldrums an article OK
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
will come probably in the middle of next week now we we
host the quiz scorers this morning this is the hardest quits went into hard 1st question is pretty easy and so
these guys carries these guys get these there's a few scenes here we usually have hardly any
CDs OK quiz fighters
Friday the 1st 2 were
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
conditions "quotation mark there so we won and was even sweeter is we
beat St very very sweet
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
fierce and even nature the not known to be fears but the focus
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
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
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
OK in terms of figuring out of this
process a spontaneous noticed that the focus is totally on entropy where were not
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
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 right-hand 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
but and then we have to think back
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
subscript just assume we're talking about the system OK so this
is the pink equation finally took a for steps to get there from conservation of entropy were not conservation of
entropy from entropy dictating which processes spontaneous not but we kept coming back to this speak equation on Friday In deriving different from an
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
whether the process spontaneous enough but unfortunately we don't encounter these
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
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
attention to these 2 variables to figure that out they're not going to help guide your
decision-making process and figuring out whether you're chemistry the spontaneous or not that's what we care about here so we need some other
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
for 2 things to be 0 otherwise we're not going to end up with the state function and so will also
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 left-hand side were going to get DU and would have DTS and so we can split-that 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
plug this thing into the pink equation but this expression for
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
on the peak equation became the
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
on equilibrium these 2 temperatures will become very very close and under those conditions we can
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
a state function that we can use to tell whether whether the chemistry that we care about His spontaneous or not when temperature and
volume are held constant and in the laboratory we can enforce that limits we we could do an
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
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
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
in here we would want to use the Hamilton a to figure out whether spontaneous no if you do wonder
if you do undergraduate research ,comma people done undergraduate research
How many people see apart
right few who you guys were free
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
from anemic function Hamilton is fine but constant volume is inconvenient for us to use because
we needed part about do it in many cases you can fit even more
useful to make petitions but prediction of processes occurring constant pressure and temperature because that is dead easy but we live in an
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
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
equilibrium they will be the
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
to be the state function that we're going to Wunnicke on most of the time as chemists right now physicist some other
kind of scientist these other state functions might be more important to you under other sets of conditions but for
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
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
car so today last Friday we've
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
we didn't have to assume anything proprietor that it's hard but now
these conditions here also serve to tell us whether the system is proceeding toward equilibrium it not only
tells us for where the chemistry spontaneous it'll tell us whether there systems proceeding towards equilibrium were not for example 1
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
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
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
we know DG should be less than 0 OK so we
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
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
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
energy going to they indicate the equilibrium position of this reaction but it's supply were
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
equilibrium OK now his 4th
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
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
jeez equal the age minus yes we know that and so we can take the derivative immediately DGT-GTD 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
counterintuitive don't all energies go up when you increase the temperature not this 1 but the gives energy goes
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
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
going gasses at the highest
interest and so the rate of
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
so couple things there's surprise me 1 thing that's surprising for sure
is that the gives energy goes down with temperatures right it's an
unusual energy business that goes down with but OK so
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
important because it allows us To Measure H by looking at the temperature dependence and the temperature
dependence of GE is something we're going to be able to measure experimentally all right so we can get H directly
from that during this conceptual gives Helmholtz equation now if this is a Delta age methodology this equation still this so let's ask
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
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
volume trends and change in pressure
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
compressible but the volume doesn't depend on pressure very strongly but
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
molar volume is highly dependent on pressure consequently the Gibbs
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
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
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
right and so it's obvious that the
gives energy is going to go up just based on that but now we can define a standard Muller Gibbs free energy artwork constantly
that should be toward freeing here were trying to get rid of the word free should
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
of it says standard it's 1
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
us the gives energies gotta go up with increasing pressure right what
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
intuitive picture applies right if we move this higher pressure the
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
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
think so they're just not paying attention focus Judaism examples but
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
calculate gives energy right
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
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
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
energy right so here I need
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
right that's the delta G that I get
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
Gibbs energy is going to be now when I
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
with the isothermal compressibility and see how different our answers will be right isothermal
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
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
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
right that's wrong that's right but pretty darn close to being right so it depends on the
precision that you need on the quiz that might be good enough
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
entity that as a former compressibility makes it a little bit more complicated OK so the last thing to say today is
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
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
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
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
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
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
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
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
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
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
this reaction should be spontaneous at this temperature with the way this Oregon
105 other
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
Besprechung/Interview
Gibbs-Energie
Vorlesung/Konferenz
Topizität
Mühle
Besprechung/Interview
Gibbs-Energie
Wirtsspezifität
Computeranimation
Bukett <Wein>
Körpertemperatur
Besprechung/Interview
Cadmiumsulfid
Krankheit
Vorlesung/Konferenz
Gezeiten
Süßkraft
Computeranimation
Besprechung/Interview
Setzen <Verfahrenstechnik>
Gibbs-Energie
Chemischer Prozess
Bildungsentropie
Druckausgleich
Computeranimation
Azokupplung
Körpertemperatur
Gibbs-Energie
Selbstentzündung
Gallium
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Chemische Forschung
Mühle
Besprechung/Interview
Chemischer Prozess
Selbstentzündung
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Computeranimation
Bodenschutz
Mineralbildung
Besprechung/Interview
Chemischer Prozess
Vorlesung/Konferenz
Gletscherzunge
Selbstentzündung
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Bodenschutz
Vorlesung/Konferenz
Genexpression
Druckausgleich
Computeranimation
Bodenschutz
Besprechung/Interview
Chemischer Prozess
Krankheit
Selbstentzündung
Gangart <Erzlagerstätte>
Bildungsenthalpie
Selbstentzündung
Druckausgleich
Systemische Therapie <Pharmakologie>
Chemischer Prozess
Computeranimation
Chemische Forschung
Herzfrequenzvariabilität
Single electron transfer
Besprechung/Interview
Pharmazie
Krankheit
Vorlesung/Konferenz
Koch
Selbstentzündung
Selbstentzündung
Chemischer Prozess
Chemische Forschung
Körpertemperatur
Vorlesung/Konferenz
Chemische Forschung
Computeranimation
Hexachlorcyclohexan
Vorlesung/Konferenz
RWE Dea AG
Chemische Forschung
Genexpression
Mischgut
Körpertemperatur
Chemischer Prozess
Krankheit
Vorlesung/Konferenz
TPD
Selbstentzündung
Genexpression
Druckausgleich
Computeranimation
Chemische Forschung
Besprechung/Interview
Chemischer Prozess
Krankheit
Vorlesung/Konferenz
RWE Dea AG
Druckbelastung
Laichgewässer
Reaktionsführung
Körpertemperatur
Chemischer Prozess
Tank
Glimmer
Selbstentzündung
Repression <Genetik>
Druckausgleich
Computeranimation
Druckbelastung
Chemische Forschung
Laichgewässer
Besprechung/Interview
Vorlesung/Konferenz
Chemische Forschung
Besprechung/Interview
Chemischer Prozess
Gibbs-Energie
Druckausgleich
Körpertemperatur
Computeranimation
Claus-Verfahren
Körpertemperatur
Selbstentzündung
Funktionelle Gruppe
Elastin
Küstengebiet
Chemischer Prozess
Mineralbildung
Altern
Fülle <Speise>
Gibbs-Energie
Chemischer Prozess
Vorlesung/Konferenz
Genexpression
Druckausgleich
Küstengebiet
Systemische Therapie <Pharmakologie>
Computeranimation
Druckbelastung
Gen
Single electron transfer
Pharmazie
Krankheit
Vorlesung/Konferenz
Computeranimation
Druckbelastung
Chemische Forschung
Fülle <Speise>
Gibbs-Energie
Besprechung/Interview
Chemischer Prozess
Gibbs-Energie
Vorlesung/Konferenz
Funktionelle Gruppe
Lactitol
Körpertemperatur
Proteinglutamin-Glutamyltransferase <Proteinglutamin-gamma-glutamyltransferase>
Computeranimation
Krankheit
Körpertemperatur
Gibbs-Energie
Krankheit
Vorlesung/Konferenz
Selbstentzündung
Bildungsentropie
Selbstentzündung
Druckausgleich
Systemische Therapie <Pharmakologie>
Computeranimation
Chemische Forschung
Besprechung/Interview
Gibbs-Energie
Krankheit
Vorlesung/Konferenz
Selbstentzündung
Bildungsenthalpie
Systemische Therapie <Pharmakologie>
Chemische Forschung
Chemische Reaktion
Sense
Reaktionsführung
Biskalcitratum
Koordinationszahl
Farbenindustrie
Delta
Funktionelle Gruppe
Chemischer Prozess
Computeranimation
Besprechung/Interview
Chemischer Prozess
Vorlesung/Konferenz
Selbstentzündung
Selbstentzündung
Chemischer Prozess
Besprechung/Interview
Chemischer Prozess
Vorlesung/Konferenz
Selbstentzündung
Chemischer Prozess
Aktionspotenzial
Körpertemperatur
Reaktionsführung
Besprechung/Interview
Gibbs-Energie
Vorlesung/Konferenz
Selbstentzündung
Körpertemperatur
Aktionspotenzial
Altern
Derivatisierung
Reaktionsführung
Körpertemperatur
Elektronegativität
Besprechung/Interview
Pharmazie
Bildungsentropie
Selbstentzündung
Körpertemperatur
Vulkanisation
Computeranimation
Oktanzahl
Körpertemperatur
Besprechung/Interview
Sterblichkeit
Körpertemperatur
Systemische Therapie <Pharmakologie>
Computeranimation
Gasphase
Oktanzahl
Körpertemperatur
Gibbs-Energie
Besprechung/Interview
Vorlesung/Konferenz
Sterblichkeit
Körpertemperatur
Gasphase
Gasphase
Derivatisierung
Körpertemperatur
Derivatisierung
Besprechung/Interview
Gibbs-Energie
Temperaturabhängigkeit
Diamantähnlicher Kohlenstoff
Labkäse
Körpertemperatur
Genexpression
Tee
Kettenlänge <Makromolekül>
Computeranimation
Altern
Körpertemperatur
Besprechung/Interview
Chemischer Prozess
Gibbs-Energie
Temperaturabhängigkeit
Computeranimation
Molvolumen
Zugbeanspruchung
Phasengleichgewicht
Phasengleichgewicht
Oktanzahl
Besprechung/Interview
Setzen <Verfahrenstechnik>
Genexpression
Druckausgleich
Sprödbruch
Druckbelastung
Körpertemperatur
Molvolumen
Initiator <Chemie>
Gletscherzunge
Funktionelle Gruppe
Hydroxybuttersäure <gamma->
Druckbelastung
Besprechung/Interview
Gibbs-Energie
Druckausgleich
Druckbelastung
Gibbs-Energie
Besprechung/Interview
Gibbs-Energie
Molvolumen
Gletscherzunge
Boyle-Mariotte-Gesetz
Funktionelle Gruppe
Druckausgleich
Gasphase
Boyle-Mariotte-Gesetz
Gasphase
Druckbelastung
Querprofil
Besprechung/Interview
Funktionelle Gruppe
Druckausgleich
Druckbelastung
Molvolumen
Zuchtziel
Gibbs-Energie
Besprechung/Interview
Gibbs-Energie
Vorlesung/Konferenz
Zuchtziel
Druckausgleich
Computeranimation
Druckbelastung
Molvolumen
Zuchtziel
Gibbs-Energie
Genexpression
Druckausgleich
Computeranimation
Druckbelastung
Molvolumen
Zuchtziel
Gibbs-Energie
Sammler <Technik>
Besprechung/Interview
Gibbs-Energie
Boyle-Mariotte-Gesetz
Druckausgleich
Gasphase
Computeranimation
Erdrutsch
Druckbelastung
Körpertemperatur
Besprechung/Interview
Gibbs-Energie
Massendichte
Druckausgleich
Druckbelastung
Sonnenschutzmittel
Methanol
Methanol
Besprechung/Interview
Gibbs-Energie
Massendichte
Druckausgleich
Computeranimation
Massendichte
Kubisches Gitter
Druckbelastung
Zugbeanspruchung
Methanol
Gibbs-Energie
Massendichte
Chemischer Prozess
Computeranimation
Sonnenschutzmittel
Krebsrisiko
Besprechung/Interview
Gibbs-Energie
Kubisches Gitter
Konvertierung
Edelstein
Computeranimation
Druckbelastung
Methanol
Methanol
Delta
Massendichte
Druckbelastung
Zugbeanspruchung
Methanol
Methanol
Gibbs-Energie
Vorlesung/Konferenz
Massendichte
Adsorptionsisotherme
Computeranimation
Biologisches Lebensmittel
Zugbeanspruchung
Gibbs-Energie
Erzgang
Druckausgleich
Genexpression
Computeranimation
Druckbelastung
Derivatisierung
Methanol
Körpertemperatur
Vorlesung/Konferenz
Initiator <Chemie>
Massendichte
Periodate
Druckbelastung
Derivatisierung
Zugbeanspruchung
Methanol
Chemische Eigenschaft
Methanol
Gibbs-Energie
Vorlesung/Konferenz
Massendichte
Adsorptionsisotherme
Edelstein
Druckbelastung
Methanol
Bukett <Wein>
Besprechung/Interview
Gibbs-Energie
Vorlesung/Konferenz
Massendichte
Computeranimation
Zuchtziel
Zugbeanspruchung
Chemische Reaktion
Fülle <Speise>
Reaktionsführung
Gibbs-Energie
Gibbs-Energie
Bildungsentropie
Zuchtziel
Computeranimation
Zuchtziel
Chemische Reaktion
Körpertemperatur
Reaktionsführung
Besprechung/Interview
Gibbs-Energie
Bildungsentropie
Vorlesung/Konferenz
Delta
Computeranimation
Zuchtziel
Chemische Reaktion
Spezies <Chemie>
Oktanzahl
Reaktionsführung
Chemischer Reaktor
Besprechung/Interview
Gibbs-Energie
Setzen <Verfahrenstechnik>
Bildungsentropie
Delta
Computeranimation
Fleischersatz
Zuchtziel
Reaktionsführung
Spezies <Chemie>
Besprechung/Interview
Gibbs-Energie
Zuchtziel
Druckausgleich
Computeranimation
Laichgewässer
Chemische Reaktion
Körpertemperatur
Bildungsentropie
Vorlesung/Konferenz
Gletscherzunge
Altern
Zuchtziel
Chemische Reaktion
Bildungsenthalpie
Gibbs-Energie
Bildungsentropie
Vorlesung/Konferenz
Delta
Zuchtziel
Disulfiram
Edelstein
Zuchtziel
Chemische Reaktion
Fülle <Speise>
Körpertemperatur
Reaktionsführung
Besprechung/Interview
Gibbs-Energie
Bildungsentropie
Vorlesung/Konferenz
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 CC-Namensnennung - Weitergabe unter gleichen Bedingungen 3.0 Unported:
Sie dürfen das Werk bzw. den Inhalt zu jedem legalen und nicht-kommerziellen 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 thermo-chemistry 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 Gibbs-Helmholtz Equation 0:30:19 Standard Molar Gibbs

Zugehöriges Material

Ähnliche Filme

Loading...