Unlike first-order reactions, a zero-order reaction reaches 100% completion in finite time. What is — Chemical Kinetics Chemistry Question

💡 Solution & Explanation

The integrated rate law is $[A]_t = [A]_0 - kt$. At 100% completion, $[A]_t = 0$. Substituting this gives $0 = [A]_0 - kt_{100\%}$, which evaluates to $t_{100\%} = [A]_0 / k$ (or $a/k$).