The rate law for the reaction 3A → 2B is rate = k[A] with a rate constant of 0.0447 hr⁻¹. What is the half-life of the reaction?

Name: The rate law for the reaction 3A → 2B is rate = k[A] with a rate constant of 0.0447 hr − 1 . What is the half-life of the reaction?
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Question

Quizplus · Accepted Answer

The reaction is first-order, as indicated by the rate law rate = k[A]. The half-life for a first-order reaction is given by t₁/₂ = 0.693/k. Substituting the given rate constant, t₁/₂ = 0.693/0.0447 hr⁻¹ = 15.5 hr.

The Rate Law for the Reaction 3A → 2B Is