MDCAT Chemistry MCQ #5109

When the temperature of a reaction is increased by 10 K, the rate usually doubles. Mechanistically, what is the primary cause?

MDCAT Chemistry MCQ #5109

  1. Question 1

    Q1. When the temperature of a reaction is increased by 10 K, the rate usually doubles. Mechanistically, what is the primary cause?

    • A) The activation energy decreases
    • B) The value of the rate constant (k) increases
    • C) The molecularity of the reaction changes
    • D) The order of the reaction decreases

    Answer: The value of the rate constant (k) increases

    Explanation: The rate constant k increases exponentially with temperature. Option A is wrong because Ea is generally independent of temperature.