Entropy of the universe

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Axel
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Entropy of the universe

Post by Axel »

For each of the following processes, tell whether the entropy of the universe increases, decreases, or remains constant.
a. Solid NaCl is dissolved in water at room temperature.
b. A saturated solution of NaCl is cooled, causing some solid NaCl to precipitate.
C. Water freezes.
d. Carbon tetrachloride, CCl4, evaporates.
e. The reaction PC13(g) + Cl2(g) → PC15(g) occurs.
f. The reaction 2CH3OH(1) + 302(g) → 2CO2(g) + 4H2O(g) occurs.
I'm not sure about my answers. Can someone correct me if I'm wrong? Thank you.
My answers:
a. inc
b. inc
c. constant
d. inc
e.dec
f. dec
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ChenBeier
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Re: Entropy of the universe

Post by ChenBeier »

If a) is correct, how can be the solution of b) is correct?
c) is wrong
d) correct
e) correct
f) wrong
Axel
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Re: Entropy of the universe

Post by Axel »

a. inc
b. dec
c. dec
d. inc
e.dec
f. inc
Are these now correct? It's entropy of the universe by the way.
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ChenBeier
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Re: Entropy of the universe

Post by ChenBeier »

I think so.
RedAmid
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Re: Entropy of the universe

Post by RedAmid »

Axel wrote: Tue Apr 19, 2022 6:08 pm mcdvoice
a. inc
b. dec
c. dec
d. inc
e.dec
f. inc
Are these now correct? It's entropy of the universe by the way.
I really like this post
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