MDCAT Chemistry MCQ #642

A student wants to synthesize propene from 1-bromopropane. Which set of reaction conditions will most effectively promote the elimination mechanism over substitution?

MDCAT Chemistry MCQ #642

  1. Question 1

    Q1. A student wants to synthesize propene from 1-bromopropane. Which set of reaction conditions will most effectively promote the elimination mechanism over substitution?

    • A) Low temperature and dilute aqueous KOH
    • B) Low temperature and alcoholic KOH
    • C) High temperature and dilute aqueous KOH
    • D) High temperature and concentrated alcoholic KOH

    Answer: High temperature and concentrated alcoholic KOH

    Explanation: High temperature and high concentration of strong base favor elimination over substitution; low temperature is wrong because it favors the substitution pathway.