Question

A container holds 6.4 moles of gas. Hydrogen gas makes up 25% of the total moles in the container. If the total pressure is 1.24 atm. What is the partial pressure of hydrogen?

Answer 1

Answer:- 0.31 atm.

Solution:- Total moles are 6.4 and hydrogen is 25% of these total moles.

So, moles of hydrogen = $\frac{(25)(6.4)}{100}$

= 1.6 mol

mole fraction of hydrogen = $\frac{H_2mol}{total mol}$

= $\frac{1.6}{6.4}$

= 0.25

Partial pressure = mole fraction*total pressure

So, partial pressure of hydogen gas = 0.25*1.24 atm

= 0.31 atm

Hence, the partial pressure of hydrogen gas in the container is 0.31 atm.