engineering chemistry MCQ #4895

For a first-order reaction, the rate constant is 0.01 s^-1. What is the half-life?

engineering chemistry MCQ #4895

  1. Question 1

    Q1. For a first-order reaction, the rate constant is 0.01 s^-1. What is the half-life?

    • A) 69.3 s
    • B) 100 s
    • C) 50 s
    • D) 200 s

    Answer: 69.3 s

    Explanation: For a first-order reaction, t1/2 = 0.693 / k = 0.693 / 0.01 = 69.3 s, using the formula t1/2 = ln(2) / k.