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In lecture, it was brought up that enzymes are a zero order reaction. I was wondering why that is true because to be it would make more sense for them to be a first-order reaction since the amount you have would matter? So wouldn't it be dependent on concentration?
I think he was referring to an enzyme catalysed reaction, not the enzyme itself. We assume that the reactants are saturated with respect to the enzyme, so the enzymes are already working at full potential. Adding more reactant is not going to make the enzyme work faster
Since in an enzyme catalyzed reaction the rate of reaction of the enzyme doesn’t change based on the amount of reactant, and the enzyme itself is not affected, it wouldn’t be taken into account in the rate law, so it would be zero order
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