Essential Chemistry for IGCSE - Rate Of Reaction (Section 4 - No. 26)

What is the role of the 'activation energy' in a chemical reaction?
To act as a catalyst.
To provide a barrier that must be overcome for the reaction to proceed.
To indicate the total energy of the reactants.
To accelerate the reaction.

Explanation

Activation energy is the minimum energy required for a reaction to start.

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