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23 January, 10:29

A catalyst speeds up a chemical reaction by A. decreasing the reaction enthalpy. B. providing an alternate reaction pathway. C. shifting the equilibrium. D. increasing the activation energy.

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  1. 23 January, 10:41
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    B. providing an alternate reaction pathway

    Explanation:

    For a reaction to occur, the molecules of the reaction must collide with a minimum energy called the activation energy. For this reason, every reaction has an energy barrier (activation energy) to be broken for the reaction to occur.

    A catalyst can speed up a reaction by lowering the energy barrier (activation energy) and the reaction will follow an alternate pathway as a result of this.

    However catalyst are unchanged chemically in reaction.
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