MDCAT Chemistry MCQ #489

What mass of CO2 is produced by oxidizing 1.0 g of benzaldehyde to benzoic acid? (Molar masses: C7H6O = 106 g/mol, CO2 = 44 g/mol)

MDCAT Chemistry MCQ #489

  1. Question 1

    Q1. What mass of CO2 is produced by oxidizing 1.0 g of benzaldehyde to benzoic acid? (Molar masses: C7H6O = 106 g/mol, CO2 = 44 g/mol)

    • A) 0.41 g
    • B) 1.0 g
    • C) 2.0 g
    • D) 0.82 g

    Answer: 0.41 g

    Explanation: 1 mole aldehyde produces 1 mole CO2. 1.0 g / 106 g/mol = 0.00943 mol. 0.00943 × 44 = 0.41 g (B assumes CO2 molar mass = 30).