Zeroth-order reactions have a constant rate independent of reactant concentration, illustrated by the oxidation of ethanol in the bloodstream.
Zeroth-order reactions are those where the reaction rate remains constant regardless of the concentration of the reactant. In the context of alcohol removal from the bloodstream, the oxidation of ethanol to acetaldehyde catalyzed by alcohol dehydrogenase enzyme is an example of a zeroth-order reaction.
The rate at which alcohol is removed from the blood does not increase with higher alcohol concentrations because it is solely dependent on the amount of enzyme present in the liver. This characteristic is indicative of a zero-order reaction.
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