Question

For diatomic ideal gas in a closed system, which of the following plots does not correctly describe the relation between various thermodynamic quantities ?

• A.
• B.
• C.
• D.

Answer 1

Answer: (B)

Answer 2

At higher temperature, rotational degree of freedom becomes active. $C_{P} = \frac{7}{2} R$ (Independent of P) $C_{V} = \frac{5}{2} R$ (Independent of V) Variation of $U$ vs $T$ is similar as $C_V$ vs $T$.