I had a doubt. We know that evaporation exists at all temperatures .If we have a closed vessel filled with water ten after sometime an equilibrium between water vapours and liquid water will establish .won't the Gibbs free energy of liquid and gas be same here also .I am not clear with this idea. And How can we visualise this in the graph that you have discussed .Can you please explain?
Great question! The answer is that the Gibbs energy of the gas also depends pretty strongly on pressure. As more water evaporates, the pressure of the gas becomes larger, and the Gibbs energy of the gas increases. Eventually the Gibbs energy will increase to the point where it is the same in both phases -- this is when equilibrium is reached. There are more details on how G depends on P here: th-cam.com/video/BR4kwCdQpdQ/w-d-xo.html And the series of ~6 videos after this one walks through how to consider the dependence of G on both T and P, and how that affects solid/liquid/gas phase transitions.
Easy! I just write normally, but then the image gets reversed horizontally. Here's a little more info: th-cam.com/video/YmvJVkyJbLc/w-d-xo.htmlsi=H0LhR4OSC6_nxhu6
I can't thank you enough. You've been helping me in my review for my licensure exam. Your explainations are very clear.
Dr Rosliza suruh tengok
how can you explain macromolecules transitions? (lipids, proteins and dna)
I had a doubt.
We know that evaporation exists at all temperatures .If we have a closed vessel filled with water ten after sometime an equilibrium between water vapours and liquid water will establish .won't the Gibbs free energy of liquid and gas be same here also .I am not clear with this idea. And How can we visualise this in the graph that you have discussed .Can you please explain?
Great question! The answer is that the Gibbs energy of the gas also depends pretty strongly on pressure. As more water evaporates, the pressure of the gas becomes larger, and the Gibbs energy of the gas increases. Eventually the Gibbs energy will increase to the point where it is the same in both phases -- this is when equilibrium is reached.
There are more details on how G depends on P here: th-cam.com/video/BR4kwCdQpdQ/w-d-xo.html
And the series of ~6 videos after this one walks through how to consider the dependence of G on both T and P, and how that affects solid/liquid/gas phase transitions.
how do you write like this ?
Easy! I just write normally, but then the image gets reversed horizontally.
Here's a little more info: th-cam.com/video/YmvJVkyJbLc/w-d-xo.htmlsi=H0LhR4OSC6_nxhu6
why is there a liquid gas equilibrium of water at room temperature if the chemical potential of liquid is less than gas at the room temperature
Because chemical potential also depends on pressure (see the more detailed response to your other question)
Wonderful lecture..expecting more from you sir
@@stevenjstuart Would you please upload lectures on thermodynamics of polymer/proteins?
@@stevenjstuart The thing I liked is that it is brief and yet complete
That's a good suggestion, thanks.
Exam tomorrow 🥲
THANKS!!!!!!!
My pleasure
@@PhysicalChemistry i have an exam tomorrow! Trying to catch the trickiest concepts🤞🏼🤞🏼🤞🏼
@@hghgh4505 Good luck on your exam