Q119 · CSIR NET Chemistry, December 2013
Paper: CSIR NET December 2013 · Subject: Physical Chemistry · Chapter: Thermodynamics · Topic: Thermodynamics – General · Marks: 2 · Difficulty: Medium
The heat capacity of 10 mol of an ideal gas at a certain temperature is $300 \mathrm{JK}^{-1}$ at constant pressure. The heat capacity of the same gas at the same temperature and at constant volume would be
(a)$383 \mathrm{JK}^{-1}$
(b)$217 \mathrm{JK}^{-1}$
(c)$134 \mathrm{JK}^{-1}$
(d)$466 \mathrm{JK}^{-1}$
Answer
Answer: B ✓ checked by 4AB · confidence high
Explanation
C_V = C_p − nR = 300 − 10 × 8.314 = 217 J K⁻¹.
Study loop for Thermodynamics