The average and instantaneous rate can be equal:
Correct answer: C. At one instant only
- A. Throughout the reaction
- B. Near reaction completion
- C. At one instant only
- D. At the start of the reaction
Explanation
The only time when the average rate and the instantaneous rate would be equal is at one specific instant during the reaction. This happens because the average rate is a representation of the change in concentration over a finite interval, whereas the instantaneous rate pertains to a precise moment, albeit for an infinitesimally small period.
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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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