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UPCAT Science practice question 25: A catalyst speeds up a chemical reaction by

Correct answer

A. lowering the activation energy required

A catalyst provides an alternative pathway with lower activation energy and emerges from the reaction chemically unchanged.

A catalyst speeds up a chemical reaction by

  1. lowering the activation energy requiredCorrect
  2. increasing the temperature of the mixture
  3. adding energy to the products
  4. being consumed as a reactant

Why A is correct

A catalyst provides an alternative pathway with lower activation energy and emerges from the reaction chemically unchanged.

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