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Question

What is the role of a catalyst in a reaction ?

A
Lowers the activation energy
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B
Increase the activation energy
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C
Affects the free energy change
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D
Affects the enthalpy change
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Solution

The correct option is A Lowers the activation energy
All substances have average energy and before the reaction occurs energy of the reactant should be higher than the average energy. The catalyst lowers the activation clergy. Therefore, rate of reaction is increased.

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