The reaction \(\mathrm{A} \xrightarrow{k_1} \mathrm{B} \xrightarrow{k_2} \mathrm{C}\) is an example of a __________ reaction.

$\mathrm{A} \rightarrow \mathrm{B} \rightarrow \mathrm{C}$ with rate constants $k_1$, $k_2$, where the product of the first step is the reactant of the second, is a consecutive reaction. In competing (parallel) reactions one reactant forms two products side by side, and a chain reaction regenerates a reactive intermediate in a propagation cycle.