Q37 / 120 · NEET 2012 (Mains) · Chemistry

Equal volumes of two monoatomic gases, $A$ and $B$, at same temperature and pressure are mixed. The ratio of specific heats $\left(c_p / c_V\right)$ of the mixture will be

  • A
    0.83
  • B
    1.50
  • C
    3.3
  • Correct answer
    D
    1.67

Solution

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

Hence, the correct answer is option: 'D'.

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