Question

If for a gas $\frac{R}{C_v}=0.67$, then the gas is made up of molecules which are :

• A. Diatomic
• B. Monoatomic
• C. Polyatomic
• D. Mixture of Diatomic & Polyatomic

Answer 1

Answer: (B)

Monoatomic

Given $\frac{R}{C_v}=0.67$
or
$\frac{R}{f\frac{R}{2}}=0.67$
or
$f=\frac{2}{0.67}=3$
The degree of freedom is 3. So the given gas is monoatomic.