Given the reaction shown below, if substrate S is in great excess, what is the overall order of the reaction?

Chemical Reaction MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

PPSCFPSCNTSPakistan govt jobs
Subject
Chemical Reactionchemical-engineering › chemical-reaction
Published
23 Feb 2019
Last updated
28 May 2026

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Explanation

When the substrate S is present in a large excess, the reaction rate depends linearly on the concentration of the other reactant, making the reaction first order.

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