Question

What will be the molar specific heat at constant volume of an ideal gas consisting of rigid diatomic molecules?

• A. $\frac{3}{2}R$
• B. $\frac{5}{2}R$
• C. R
• D. 3R

Answer 1

Answer: (B)

$\frac{5}{2}R$

Answer 2

f = 5 for diatomic gas $\therefore C_{v} =\frac{f}{2} R \Rightarrow\frac{5}{2}R$