Q116 · CSIR-NET Chemistry, December 2015

Paper: CSIR-NET December 2015 · Subject: Physical Chemistry · Chapter: Statistical Thermodynamics · Topic: Partition Functions · Marks: 2 · Difficulty: Medium

Though a constant shift of energy levels of a system changes the partition function, the properties that do not change are
(a)average energy, entropy and heat capacity
(b)average energy and entropy
(c)average energy and heat capacity
(d)entropy and heat capacity
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
A constant shift multiplies Q by e^{−Nε₀/kT}: the average energy shifts by ε₀, but entropy and heat capacity (derivatives with respect to T) are unchanged.

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