Same chapter3 marksDifficulty: Medium
State the Arrhenius equation and explain why the rate of a reaction rises steeply with temperature.
Chemical Kinetics
3 marksDifficulty: Medium
What is a zero-order reaction? Give one example and state the unit of its rate constant.
Original Khojo Papers practice question — not from a past board paper.
Answer
In a zero-order reaction the rate does not depend on the concentration of the reactant. The decomposition of ammonia on a hot platinum surface is an example, because the surface is saturated. The unit of the rate constant is mol L−1 s−1.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
For a first-order reaction the unit of k is s−1, with no concentration term.
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Solutions