MDCAT Chemistry MCQ #5128

For a given reaction, the rate constant at 300 K is 0.01 s^-1 and at 310 K is 0.02 s^-1. What is the activation energy (approximately)?

MDCAT Chemistry MCQ #5128

  1. Question 1

    Q1. For a given reaction, the rate constant at 300 K is 0.01 s^-1 and at 310 K is 0.02 s^-1. What is the activation energy (approximately)?

    • A) 53.6 kJ/mol
    • B) 50 kJ/mol
    • C) 60 kJ/mol
    • D) 70 kJ/mol

    Answer: 53.6 kJ/mol

    Explanation: Using the Arrhenius equation and simplifying gives Ea = R*ln(0.02/0.01)/(1/300 - 1/310) ≈ 53.6 kJ/mol.