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Activation energy of a chemical reaction can be determined by:

1. evaluating rate constant at standard temperature
2. evaluating velocities of reaction at two different temperatures
3. evaluating rate constants at two different temperatures
4. changing concentration of reactants

Correct answer: evaluating rate constants at two different temperatures

Solution

Activation energy can be determined using the Arrhenius equation by evaluating the rate constants at two different temperatures and plotting or calculating accordingly.

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