Question

The partial pressure of hydrogen in a flaskcontaining 2 g of $H_2$ and 32 g of $S0_2$ is

• A. 1/16 of total pressure
• B. 1/2 of total pressure
• C. 2/3 of total pressure
• D. 1/8 of total pressure

Answer 1

Answer: (C)

2/3 of total pressure

Answer 2

Moles of $H_2 = \frac{2}{2}$ = 1 : moles of $SO_2 = \frac{32}{64}$ = 0.5 Total moles = 1 + 0.5 = 1. 5 Let total pressure be P $\therefore$ Pressure of 1.5 moles = P $\therefore$ Pressure of 1 mol = $\frac{P}{1.5} = \frac{P}{3/2} = \frac{2P}{3}$