Q122 · CSIR-NET Chemistry, December 2015

Paper: CSIR-NET December 2015 · Subject: Physical Chemistry · Chapter: Thermodynamics · Topic: Thermodynamics – General · Marks: 2 · Difficulty: Medium

A reversible expansion of 1.0 mol of an ideal gas is carried out from 1.0 L to 4.0 L under isothermal condition at $300 \mathrm{K} . \Delta \mathrm{G}$ for this process is
(a)300R.ln 2
(b)600R.ln 2
(c)-600R.ln 2
(d)-300R.ln 2 6
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
ΔG = nRT ln(V₁/V₂) = 300R ln(1/4) = −600R ln 2.

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