Question

An empty container was filled with equal masses of methane and hydrogen gases. The fraction of total pressure exerted by hydrogen is____.

• A. $\frac{1}{2}$
• B. $\frac{8}{9}$
• C. $\frac{1}{9}$
• D. $\frac{16}{17}$

Answer 1

The correct option is B

$\frac{8}{9}$

Molar ratio of same masses of methane and $H_2$ is 1:8 . So, the fraction of total pressure due to $H_2$ is $\frac{8}{9}$.