Question

How does activation energy affect a chemical reaction ?

Answer 1

Answer: Option (B) is the correct answer.

Explanation:

Activation energy is the minimum amount of energy required to start or initiate a chemical reaction.

More is the activation energy more difficult is it for the reactants to participate in reaction.

Whereas a catalyst helps in increasing the rate of a reaction by increasing the energy of reactant molecules so that they can cross the activation energy barrier and therefore, formation of products become faster.

Thus, we can conclude that activation energy affect a chemical reaction as it determines how difficult it is to start the reaction.

Answer 2

Enzymes affect the rate of the reaction in both the forward and reverse directions; the reaction proceeds faster because less energy is required for molecules to react when they collide. Thus, the rate constant (k) increases. Figure 3: Lowering the Activation Energy of a Reaction by a Catalyst.

hope this helps!

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