Question

For an N-atom nonlinear polyatomic gas, the constant volume molar heat capacity Cv,m has the expected value of 3(N-1)R, based on the principle of equipartition of energy. The correct statement(s) about the measured value of Cv,m is/are

• A. The measured $C_{v,m}$ is independent of temperature.
• B. The measured $C_{v,m}$ is dependent on temperature.
• C. The measured $C_{v,m}$ is typically lower than the expected value.
• D. The measured $C_{v,m}$ is typically higher than the expected value.

Answer 1

Answer: (B), (C)

The measured $C_{v,m}$ is dependent on temperature.

Answer 2

The correct option is (B): The measured $C_{v,m}$ is dependent on temperature. and (C): The measured $C_{v,m}$ is typically lower than the expected value.