MDCAT Chemistry MCQ #5126

The rate constant for a reaction is 0.05 s^-1 at 25°C. What is the half-life of this reaction?

MDCAT Chemistry MCQ #5126

  1. Question 1

    Q1. The rate constant for a reaction is 0.05 s^-1 at 25°C. What is the half-life of this reaction?

    • A) 13.86 s
    • B) 20 s
    • C) 10 s
    • D) 6.93 s

    Answer: 13.86 s

    Explanation: For a first-order reaction, t1/2 = 0.693/k = 0.693/0.05 = 13.86 s.