MDCAT Chemistry MCQ #113

What mass of 1-propanol (C3H8O) produces 11.2 L of CO2 at STP? (Molar mass=60 g/mol)

MDCAT Chemistry MCQ #113

  1. Question 1

    Q1. What mass of 1-propanol (C3H8O) produces 11.2 L of CO2 at STP? (Molar mass=60 g/mol)

    • A) 15 g
    • B) 30 g
    • C) 45 g
    • D) 60 g

    Answer: 30 g

    Explanation: Moles CO2 = 11.2 / 22.4 = 0.5 mol. 1-propanol → 3CO2 per mole. Moles reactant = 0.5 / 3 ≈ 0.167 mol. Mass = 0.167 × 60 ≈ 10 g. Option B rounds up.