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Rates of reaction

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Question 13

The reaction profile for an uncatalysed endothermic reaction is shown in Figure 1.

Reaction profile showing progress of reaction on the horizontal axis and energy on the vertical axis for an uncatalysed endothermic reaction. The energy level of the reactants starts low. The curve rises to a high peak, representing the activation energy of the uncatalysed reaction, before dropping slightly to a flat line for the products, which are at a higher energy level than the reactants. No catalysed pathway is currently drawn on the diagram.

Using examples of catalysts you have studied in chemistry, discuss how catalysts work and their effect on the activation energy of a chemical reaction.

You may refer to Figure 1 to support your answer.

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Rates of reaction Questions

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