A + 2B → C . What are the possible units of the rate constants 'k' for the reaction:
Correct answer: D. mol-2 dm6 s-1
- A. mol dm-1 s-1
- B. mol-1 dm3 s-1
- C. s-1
- D. mol-2 dm6 s-1
Explanation
Option D is correct because it provides the correct units for a second-order reaction with respect to A and a first-order reaction with respect to B, as indicated by the stoichiometry of the reaction. All other options do not provide the appropriate units for this specific reaction.
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About Reaction Kinetics
Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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