Catalyst is a substance, which ________________ chemical reaction?
Correct answer: C. Can either increase or decrease the speed of a
- A. Increases the speed of a
- B. Decreases the speed of a
- C. Can either increase or decrease the speed of a
- D. Alters the value of equilibrium constant in a reversible
Explanation
A catalyst changes reaction speed by providing an alternative pathway with a different activation energy, and it may either accelerate or inhibit a reaction. It does not change the equilibrium constant because it affects forward and reverse reactions equally.
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