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?

A. 0.31 atm
B. 0.93 atm
C. 5.2 atm
D. 31 atm

Answer 1

A on edge 2020

Step-by-step explanation:

Answer 2

The partial pressure of hydrogen is 0.31 atm (answer A)

calculation

partial pressure of hydrogen = moles of hydrogen/ total moles of gas x total pressure.

moles of hydrogen = 25% of total moles

that is = 25/100 x 6.4 =1.6 moles

total moles of gas = 6.4 moles

partial pressure of hydrogen is therefore = 1.6 moles/6.4 moles x 1.24 atm =0.31 atm