engineering chemistry MCQ #4912

The half-life of a first-order reaction is 100 s. The rate constant k is

engineering chemistry MCQ #4912

  1. Question 1

    Q1. The half-life of a first-order reaction is 100 s. The rate constant k is

    • A) 0.00693 s^-1
    • B) 0.0693 s^-1
    • C) 0.693 s^-1
    • D) 6.93 s^-1

    Answer: 0.00693 s^-1

    Explanation: For first-order, k = 0.693 / t1/2 = 0.693 / 100 = 0.00693 s^-1.