MDCAT Chemistry MCQ #289

A chemist mixes propanone with saturated sodium bisulfite solution. What is the molar ratio of ketone to NaHSO3 in the resulting crystalline adduct?

MDCAT Chemistry MCQ #289

  1. Question 1

    Q1. A chemist mixes propanone with saturated sodium bisulfite solution. What is the molar ratio of ketone to NaHSO3 in the resulting crystalline adduct?

    • A) 1:1
    • B) 1:2
    • C) 2:1
    • D) 3:1

    Answer: 1:1

    Explanation: The reaction between a ketone and sodium bisulfite is a 1:1 addition. 1:2 is tempting but bisulfite only adds once per carbonyl.