What is the effect of catalyst in a reaction?
Correct answer: A. Increases the rate of reaction
- A. Increases the rate of reaction
- B. Decreases the rate of reaction
- C. Keeps the rate constant
- D. None of these
Explanation
The effect of a catalyst in a chemical reaction is to increase the rate of the reaction. A catalyst works by providing an alternative reaction pathway with a lower activation energy, which allows the reaction to proceed more quickly.Catalysts do this by:Increasing the frequency of collisions between the reactant molecules.Providing an alternate reaction pathway with a lower activation energy.This results in a higher rate of reaction compared to the uncatalyzed reaction. The catalyst itself is not consumed in the reaction and can be reused.
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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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