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NeX [460]
3 years ago
11

Describe in detail what you know about the enthalpy, entropy, and free energy changes when a sample of gas condenses to a liquid

. How does temperature affect these changes?.
Chemistry
2 answers:
ycow [4]3 years ago
8 0
The keyword here is gas condenses to a liquid, which mean we're talking about condensation process

The enthalpy energy in condensation process is negative because it releases energy
The entropy in general will also decreases .

Temperature affect this change because it will create free energy if added with this result

hope this helps
Vera_Pavlovna [14]3 years ago
6 0

When a gas condenses to liquid the process is exothermic with the release energy and the enthalpy change is negative. As liquid has more ordered structure than gas, the entropy, which is the measure of disorder decreases or ∆ S has a negative value.  

Free energy is given by the Gibb's free energy equation,  

∆G = ∆H –T∆S

For a process to be spontaneous ∆ G must be negative.

∆H is negative and ∆S is negative, so the magnitude of |T∆S| should be less than the magnitude of |∆H| in that way ∆G is always negative.

|T∆S| should be less than the magnitude of |∆H|, so to favor that T should be low. The process is spontaneous at a lower temperature than at a higher temperature.  

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