engineering chemistry MCQ #4929

The half-life of a zero-order reaction is 20 s. If the initial concentration is 1 M, what is the rate constant?

engineering chemistry MCQ #4929

  1. Question 1

    Q1. The half-life of a zero-order reaction is 20 s. If the initial concentration is 1 M, what is the rate constant?

    • A) 0.025 M/s
    • B) 0.05 M/s
    • C) 0.01 M/s
    • D) 0.1 M/s

    Answer: 0.025 M/s

    Explanation: For a zero-order reaction, t1/2 = [A]0 / (2k), so k = [A]0 / (2*t1/2) = 1 / (2*20) = 0.025 M/s.