Question

Equal volumes of two monoatomic gases, A and B, at same temperature and pressure are mixed. The ratio of specific heats $(C_p/C_v)$ of the mixture will be :

• A. 0.83
• B. 1.5
• C. 3.3
• D. 1.67

Answer 1

Answer: (D)

1.67

Answer 2

For monoatomic gases $\frac{C_p}{C_{\nu}} = \gamma = \frac{5 / 2\, R}{3/2 \, R}$ = 1.67 $\because$ Equal volumes of two monoatomic gases are mixed $\therefore$ $\gamma$ will remain the same