Question

The partial pressure of hydrogen in a flask containing $2g$ of $H_2$ and $32g$ of ${SO}_2$ is:

• A. $\frac{1}{16}$ of total pressure
• B. $\frac{1}{2}$ of total pressure
• C. $\frac{2}{3}$ of total pressure
• D. $\frac{1}{8}$ of total pressure

Answer 1

Answer: (C)

$\frac{2}{3}$ of total pressure

No of moles of $H_2=\frac{2}{2}=1$ mole

No of mole of $S{O}_2=\frac{32}{64}=0.5$ mole

Partial pressure of $H_2=\frac{1}{1.5}$ of total pressure

$=\frac{2}{3}$ of total pressure

Hence, the correct answer is option $\text{C}$.