MDCAT Chemistry MCQ #5135

The decomposition of N2O5 is a first-order reaction. If the rate constant is 0.0021/min, what is the half-life?

MDCAT Chemistry MCQ #5135

  1. Question 1

    Q1. The decomposition of N2O5 is a first-order reaction. If the rate constant is 0.0021/min, what is the half-life?

    • A) 330.04 min
    • B) 330.04 s
    • C) 165.02 min
    • D) 0.00145 min

    Answer: 330.04 min

    Explanation: For first-order reactions, half-life = ln(2)/k = 0.693/0.0021 = 330.04 min.