MDCAT Chemistry MCQ #715

In the synthesis of propanoic acid from ethyl magnesium bromide and carbon dioxide, what is the required molar ratio of Grignard to CO2?

MDCAT Chemistry MCQ #715

  1. Question 1

    Q1. In the synthesis of propanoic acid from ethyl magnesium bromide and carbon dioxide, what is the required molar ratio of Grignard to CO2?

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

    Answer: 1:1

    Explanation: One mole of RMgX reacts with one mole of CO2 to form a carboxylic acid salt. Option B assumes a di-addition which is incorrect.