Question

The pressure and temperature of two different gases is P and T having the volume V for each. They are mixed keeping the same volume and temperature, the pressure of the mixture will be

• A. P / 2
• B. P
• C. 2P
• D. 4P

Answer 1

Answer: (C)

2P

Answer 2

$\mu_{1} = \frac{PV}{RT},\mu_{2} = \frac{PV}{RT}$

$P^{'} = \frac{(\mu_{1} + \mu_{2})RT}{V} = \frac{2PV}{RT} \times \frac{RT}{V} = 2P$