Question

For a gas the ratio of the two specific heats is $\frac{5}{3}$. If R $=$ 2 cal /mol-K then the values of $C_p$ and $C_v$ in cal / mol- K

• A. $C_p=5,C_v=3$
• B. $C_p=3,C_v=4$
• C. $C_p=4,C_v=3$
• D. $C_p=3,C_v=5$

Answer 1

The correct option is A $C_p=5,C_v=3$

From given data we have $C_p-C_v=2$
and $\frac{C_p}{C_v}=\frac{5}{3}$
Solving both gives ,
$C_p=5$ and $C_v=3$