Essential Chemistry for IGCSE - Rate Of Reaction (Section 1 - No. 4)
What is the effect of adding a catalyst to a chemical reaction?
Increases the rate of the reaction
Provides an alternative reaction pathway
Lowers the activation energy
Changes the concentration of the reactants
Explanation
A catalyst increases the reaction rate by lowering the activation energy, and provides an alternative reaction pathway. It does not change the concentrations of reactants.
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