MDCAT Chemistry MCQ #5137

For a certain reaction, the rate constant at 300 K is 2.5 × 10^(-3) s^(-1) and at 310 K is 5.0 × 10^(-3) s^(-1). What is the activation energy?

MDCAT Chemistry MCQ #5137

  1. Question 1

    Q1. For a certain reaction, the rate constant at 300 K is 2.5 × 10^(-3) s^(-1) and at 310 K is 5.0 × 10^(-3) s^(-1). What is the activation energy?

    • A) 53.6 kJ/mol
    • B) 50.3 kJ/mol
    • C) 100 kJ/mol
    • D) 200 kJ/mol

    Answer: 53.6 kJ/mol

    Explanation: Using Arrhenius equation, Ea = RT1T2 ln(k2/k1)/(T2-T1) = 53.6 kJ/mol.