Practice question · Multiple choice
Doubling the concentration of reactant A leaves the reaction rate unchanged. Which order with respect to A best explains this?
Hints
- Express the rate ratio as the concentration ratio raised to the order.
- Anything to the power zero is 1, so the rate does not respond.
Show the answer
D. Zero order
Why
Rate , so doubling multiplies the rate by . An unchanged rate means , giving , zero order, typical of surface-saturated catalytic reactions.
Practise Reaction Kinetics
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