The rate of a reaction in general can be increased by all the following factors except:
Correct answer: C. by an increase in activation energy
- A. by increasing temperature
- B. using a suitable catalyst
- C. by an increase in activation energy
- D. by increasing concentration of reactants
Explanation
Activation energy is inversely proportional to the rate of the reaction. When the activation energy increases, the rate of the reaction decreases. The addition of the catalyst increases the rate of the reaction. When the temperature of the reaction is increased or the concentration of the reactants is increased, the rate of the reaction increases.
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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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573 free Reaction Kinetics MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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