Q34 · 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 $300 \mathrm{K} . \Delta G$ for this process is
(a)300R.ln 2
(b)600R.ln 2
(c)-600R.ln 2
(d)-300R.ln 2
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
ΔG = nRT ln(p₂/p₁) = nRT ln(V₁/V₂) = 300R ln(1/4) = −600R ln 2.
Study loop for Thermodynamics