A reaction is experimentally found to follow the rate law, Rate = k[A]² where k = 0.130 M^-1min^-1.Starting with [A]_o = 2.50 M, how many seconds will it take for [A]_t = 1.25 M

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Quizplus · Accepted Answer

We will use the integrated rate law for a first-order reaction: ln([A]_N1)/([A]_t)) = kt Rearranging to solve for t: t = (ln([A]_N1)/([A]_t)))/k Substituting the given values: t = (ln(2.50/1.25))/(0.130 M^-1min^-1) = 185 s Therefore, the answer is (B).

A Reaction Is Experimentally Found to Follow the Rate Law