MDCAT Chemistry MCQ #603

During the preparation of Methyl Magnesium Bromide, a student accidentally adds a drop of water. Which hydrocarbon gas is immediately evolved from the flask?

MDCAT Chemistry MCQ #603

  1. Question 1

    Q1. During the preparation of Methyl Magnesium Bromide, a student accidentally adds a drop of water. Which hydrocarbon gas is immediately evolved from the flask?

    • A) Methane
    • B) Ethane
    • C) Ethene
    • D) Ethyne

    Answer: Methane

    Explanation: Grignard reagents react with any active hydrogen to form the corresponding alkane; ethene is tempting but requires a different elimination mechanism.