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Which of the following does it increase the rate of catalyst?

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in Chemistry – Class 12 by (188k points)
Which of the following does it increase the rate of catalyst?

(a) Decreasing Ea

(b) Increasing Ea

(c) Increasing pressure

(d) Increasing entropy

This question was posed to me during an online exam.

This interesting question is from Surface Chemistry topic in portion Surface Chemistry of Chemistry – Class 12

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The correct choice is (a) Decreasing Ea

Easy explanation: A catalyst lowers the activation energy and so more particles can attain activation energy, thus a faster rate of reaction. Only a small amount of catalyst is required. Increasing the amount of catalyst used will not increase the rates of reaction beyond a certain point.

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