Reaction Entropy Possibility

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JuliaPark2H
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Joined: Fri Sep 25, 2015 3:00 am

Reaction Entropy Possibility

Postby JuliaPark2H » Wed Feb 10, 2016 10:05 am

In the 2015 Winter Midterm Question 5D, Professor Snape asked Harry to calculate the entropy of vaporization for 1 mole of water at room temperature. While the question suggested that I knew better than Harry, who thought this was impossible, I didn't know better and agreed that it was impossible.
I knew that entropy was a state variable but didn't know it could be applied to scenarios like this. What is the meaning of the answer 188 J/K and what is the entropy of vaporization of room temperature vapor? How is the steaming vapor kept from condensing back into liquid and just cool in its vapor form in real life?

Chem_Mod
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Re: Reaction Entropy Possibility

Postby Chem_Mod » Wed Feb 10, 2016 4:51 pm

I went through this question in detail in my Friday review session.
See link to my midterm review session at: viewtopic.php?f=160&t=11027


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