A reaction is first order in A. If the rate constant of the reaction is 3.45 *10^-³ s^-¹, what is the half-life (t_1/2) of the reaction?

Question

Quizplus · Accepted Answer

The half-life of a first-order reaction is given by t_1/2=ln2/k, where k is the rate constant. Plugging in the given value of k, we get t_1/2=ln2/3.45 F1F1F1S1F1F1F10F1F1F1S1F1F1F1010^-³ s^-¹, which simplifies to t_1/2=200 s (approximately). Therefore, the best choice is B.

A Reaction Is First Order in A