Q20 · CSIR-NET Chemistry, December 2018

Paper: CSIR-NET December 2018 · Subject: Physical Chemistry · Chapter: Gaseous State · Topic: Gaseous State – General · Marks: 2 · Difficulty: Easy

Entropy of a perfect gas is

(a)independent of V

(b)proportional to V

(c)proportional to $\ln \mathrm{V}$

(d)proportional to $\mathrm{V}^{2}$

Answer

Answer: C ✓ checked by 4AB · confidence high

Explanation

For a perfect gas S = nC_V ln T + nR ln V + const, so the entropy varies as ln V (Sackur–Tetrode).

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