Q146 · CSIR NET Chemistry, December 2019
Paper: CSIR NET December 2019 · Subject: Physical Chemistry · Chapter: Statistical Thermodynamics · Topic: Statistical Equilibrium · Marks: 2 · Difficulty: Easy
The molar residual entropy (in $\mathrm{JK}^{-1}$ ) of solid OCS would be closest to
(a)0
(b)2.9
(c)5.8
(d)8.7
Answer
Answer: C ✓ checked by 4AB · confidence high
Explanation
Two random orientations (OCS/SCO): S = R ln 2 ≈ 5.8 J K⁻¹ mol⁻¹ (c).
Study loop for Statistical Thermodynamics