MDCAT Chemistry MCQ #368

When comparing the boiling points of propanal and n-butane, which have similar molecular masses, what trend is observed in the industrial distillation column?

MDCAT Chemistry MCQ #368

  1. Question 1

    Q1. When comparing the boiling points of propanal and n-butane, which have similar molecular masses, what trend is observed in the industrial distillation column?

    • A) Higher than alcohols
    • B) Lower than alkanes
    • C) Higher than alkanes
    • D) Same as ethers

    Answer: Higher than alkanes

    Explanation: Aldehydes have dipole-dipole forces, giving them higher B.P. than non-polar alkanes but lower than hydrogen-bonded alcohols of similar mass.