In the first-order,reaction A → products,[A] = 0.400 M initially and 0.250 M after 15.0 min,at what time will [A] = 0.200 M?

Question

Quizplus · Accepted Answer

For a first-order reaction, the rate constant k can be calculated using the formula k = (1/t) * ln([A]₀/[A]). Using the given concentrations and time, k is found. Then, using this k, the time for [A] to reach 0.200 M can be calculated using the same formula.

In the First-Order,reaction a → Products,[A] = 0