Question

1.   A balloon at a pressure of 5.0 atm contains helium and hydrogen. If the partial pressure of helium is 3.5 atm, what is the partial pressure of hydrogen?

Answer 1

The total pressure of the gas mixture is the sum of the partial pressure of the component gases: P_tot = ∑P_i = P₁ + P₂ + P₃

Therefore, the partial pressure of hydrogen is 5.0 - 3.5 = 1.5 atm