MDCAT Chemistry MCQ #442

Calculate the volume of hydrogen gas at STP required to completely reduce 0.25 moles of butanone to 2-butanol.

MDCAT Chemistry MCQ #442

  1. Question 1

    Q1. Calculate the volume of hydrogen gas at STP required to completely reduce 0.25 moles of butanone to 2-butanol.

    • A) 2.24 dm3
    • B) 5.60 dm3
    • C) 11.2 dm3
    • D) 22.4 dm3

    Answer: 5.60 dm3

    Explanation: Reduction of one mole of ketone requires one mole of H2; 0.25 moles require 5.6 dm3 at STP. 11.2 dm3 is half-molar.