The activation energy for a simple chemical reaction A--->B is Ea in forward direction. The activation energy for reverse reaction:
Correct answer: A. Can be less than or more than Ea
- A. Can be less than or more than Ea
- B. Is always double of Ea
- C. Is negative of Ea
- D. Is always less than Ea
Explanation
(i) For exothermic reaction, energy of activation for forward reaction is less than the energy of activation for backward reaction. (ii) For endothermic reaction, energy of activation for forward reaction is greater than the energy of activation for backward 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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