The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H2O condenses, the final mole percent of H2 in the gas on a dry basis will be_______________?
Correct answer: D
Explanation
Initial moles: H2=10, O2=10, CO2=30, H2O=50. After 50% condensation, remaining H2O=25. Dry gas total = 10+10+30=50. H2 mole percent = (10/50)*100 = 20%.