Kinetics of Consecutive Reactions: First Reaction, First-Order; Second Reaction, Zeroth Order

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Abstract

Many physical chemistry texts discuss the kinetics of sequential or consecutive reactions, viz: A -k1-> B -k2-> CSome of them derive or present equations that relate the time-dependent concentrations [A]t, [B]t, and [C]t from the integrated forms of the rate laws. In all cases, the presumption is made that each step is a first-order reaction. However, there is one very relevant case in which the second step is actually zeroth-order through most of its occurrence. We therefore present a similar analysis for a two-step sequential process in which the first step is first-order and the second step is zeroth-order.See Correction to this article.

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