engineering chemistry MCQ #3383

The partial pressure of a gas in a mixture is 0.5 atm. If the total pressure is 2 atm, the mole fraction is:

engineering chemistry MCQ #3383

  1. Question 1

    Q1. The partial pressure of a gas in a mixture is 0.5 atm. If the total pressure is 2 atm, the mole fraction is:

    • A) 0.25
    • B) 0.5
    • C) 0.75
    • D) 1

    Answer: 0.25

    Explanation: Mole fraction = partial pressure / total pressure = 0.5/2 = 0.25.