Question

Nitrogen and oxygen of volumes one litre each at atmospheric pressure are mixed in a closed container of volume three litres. If the process is isothermal, the ratio of final pressure of the mixture and atmospheric pressure is

• A. 2/3
• B. 3/2
• C. 2
• D. 1

Hint:

For mixing non-reacting gases isothermally: $P_{mix} V_{mix} = P_1 V_1 + P_2 V_2 + \dots$ Here: $P_{mix} (3) = P_0(1) + P_0(1) \Rightarrow 3 P_{mix} = 2 P_0$.

Answer 1

The Correct Option is A