A mixture of 0.220 moles CO,0.350 moles H₂ and 0.640 moles He has a total pressure of 2.95 atm.What is the pressure of H₂? A)1.17 atm B)0.853 atm C)1.03 atm D)0.969 atm E)0.649 atm

Question

Quizplus · Accepted Answer

The partial pressure of a gas in a mixture is given by the mole fraction of the gas multiplied by the total pressure. The mole fraction of H₂ is 0.350/(0.220+0.350+0.640) = 0.350/1.210. The partial pressure of H₂ is then (0.350/1.210) * 2.95 atm = 0.853 atm.

A Mixture of 0