On the graph, which dimension would be changed if the rate of reaction were to be altered by a catalyst?

The alteration of the rate of the chemical reaction by the addition of a catalyst will change the dimension of L

Explanation:

The parts of the Energy profile of a reaction diagram the given letters represent are;

K = The energy possessed by the reactants

L = Activation energy required for the reaction to take place

M = Energy threshold required for the reaction to take place

N = The change in the enthalpy from the reactants to the products, which is also the energy released

O = The energy possessed by the products

The addition of a catalyst changes the route with which the reaction takes place such that the reaction rate is increased because the activation energy, L, is reduced.

Therefore, the dimension that will be changed if the rate of reaction were to be altered by a catalyst is L.

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