What is the half-life of an unknown compound if 17.0% of the compound decomposes in 150 minutes via a first-order process?

Question

Quizplus · Accepted Answer

For a first-order reaction, the half-life (t1/2) can be calculated using the formula t1/2 = 0.693/k, where k is the rate constant. First, calculate k using the formula ln([A]0/[A]) = kt, where [A]0 is the initial concentration and [A] is the concentration after time t. Since 17.0% decomposes, [A] = 0.83[A]0. Solving for k and then using it to find t1/2 gives approximately 558 minutes.

What Is the Half-Life of an Unknown Compound If 17