MDCAT Chemistry MCQ #676

A researcher reacts ethyl magnesium bromide with heavy water (D2O). What is the formula of the organic gas produced in this reaction?

MDCAT Chemistry MCQ #676

  1. Question 1

    Q1. A researcher reacts ethyl magnesium bromide with heavy water (D2O). What is the formula of the organic gas produced in this reaction?

    • A) CH3CH2D
    • B) CH3CH3
    • C) CH3CH2OD
    • D) CH2=CH2

    Answer: CH3CH2D

    Explanation: Reaction with D2O replaces the MgBr group with Deuterium, forming CH3CH2D. Ethane is tempting but ignores the isotopic labeling from heavy water.