Kinetic Theory of Gases: Practice Problem & Solution

Solution Explained:

To solve this problem, we apply the core principles of Kinetic Theory of Gases. Understanding the underlying formula is key to arriving at the correct answer below:

Given $C_p = \frac{7}{2}R$. Using $C_p - C_v = R$, we find $C_v = \frac{7}{2}R - R = \frac{5}{2}R$. The ratio of specific heats is $\gamma = \frac{C_p}{C_v} = \frac{7/2 R}{5/2 R} = \frac{7}{5}$.