Question

A mixture of hydrogen and oxygen in the 2:1 pressure ratio is allowed to diffuse through a porous partition. The composition of gas coming out initially is:

• A. 8:1
• B. 2:1
• C. 1:8
• D. 1:4

Answer 1

The correct option is B 2:1

Mixture of hydrogen and oxygen makes water i.e $H_{2}O$
Using the equation PV = nRT
For ideal gas
$\frac{P_1}{P_2}=\frac{C_1}{C_2}$
Composition will be the same for the pressure i.e 2:1.