What rate constant can be determined from only the half-life of a reaction?

Question

Quizplus · Accepted Answer

A half-life is the time required for half of the reactant to be consumed, and it is dependent on the rate constant of the reaction. For a first-order reaction, the half-life is constant, and can be used to calculate the rate constant using the following equation: k = 0.693/t(1/2), where t(1/2) is the half-life of the reaction. Therefore, the rate constant can be determined from only the half-life of a reaction if the reaction is first-order.

What Rate Constant Can Be Determined from Only the Half-Life