Question:
Identify the reaction order which has a rate constant of 4.5 × 10−5 L mol−1 s−1.
Identify the reaction order which has a rate constant of 4.5 × 10−5 L mol−1 s−1.
Updated On: Jul 11, 2025
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Solution and Explanation
The units of the rate constant depend on the order of the reaction. For a reaction with rate
constant k and the following rate laws:
- For zero order: k has units of mol/L/s.
- For first order: k has units of 1/s.
- For second order: k has units of L/mol/s.
Since the given rate constant is 4.5 × 10−5 L mol−1 s−1, it matches the units for a second-order reaction.
- For zero order: k has units of mol/L/s.
- For first order: k has units of 1/s.
- For second order: k has units of L/mol/s.
Since the given rate constant is 4.5 × 10−5 L mol−1 s−1, it matches the units for a second-order reaction.
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