The type of reaction that is typically found when a material that is required for the reaction to proceed, such as a surface or a catalyst, is saturated by the reactants is called a __________ order reaction.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. zero.
In a zero-order reaction, the rate of reaction is independent of the reactant concentration because the active sites (on a surface or catalyst) are fully saturated. This means even if reactant concentration increases, the reaction rate remains constant.
Other Options:
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First-order: Rate depends on one reactant's concentration.
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Second-order: Rate depends on either two reactants or the square of one reactant's concentration.
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Third-order: Rare; rate depends on three reactants' concentrations.
Only zero-order fits when a catalyst or surface is saturated, making the rate constant.