MDCAT Chemistry MCQ #487

What volume of O2 (at STP) is required to oxidize 4.4 g of acetaldehyde to acetic acid?

MDCAT Chemistry MCQ #487

  1. Question 1

    Q1. What volume of O2 (at STP) is required to oxidize 4.4 g of acetaldehyde to acetic acid?

    • A) 2.2 L
    • B) 1.1 L
    • C) 4.4 L
    • D) 3.3 L

    Answer: 1.1 L

    Explanation: 1 mole of aldehyde requires 0.5 moles O2. 4.4 g / 44 g/mol = 0.1 mol. 0.1 × 0.5 × 22.4 L = 1.1 L (A ignores stoichiometry).