Question

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?

Answer 1

P(H₂) = 0.8533 atm

Step-by-step explanation:

n(CO) = 0.220 mole

n(H₂) = 0.350 mole

n(He) = 0.640 mole

_______________

∑ n = 1.210 moles

mole fraction => X(H₂) = 0.350/1.210 = 0.2892

Dalton's Law of Partial Pressures => P(H₂) = X(H₂)·P(ttl) = 0.2892(2.95 atm) = 0.8533 atm