engineering chemistry MCQ #4938

The rate constant (k) for a reaction is 1.2 x 10^-3 s^-1 at 300 K. The activation energy (Ea) is 50 kJ/mol. The frequency factor (A) is

engineering chemistry MCQ #4938

  1. Question 1

    Q1. The rate constant (k) for a reaction is 1.2 x 10^-3 s^-1 at 300 K. The activation energy (Ea) is 50 kJ/mol. The frequency factor (A) is

    • A) 1.15 x 10^12 s^-1
    • B) 1.15 x 10^13 s^-1
    • C) 1.15 x 10^14 s^-1
    • D) 1.15 x 10^15 s^-1

    Answer: 1.15 x 10^13 s^-1

    Explanation: Using the Arrhenius equation: k = Ae^(-Ea/RT), rearrange to find A = k / e^(-Ea/RT), and calculate A using given values.