NEET Chemistry Surface Chemistry Questions Solved

NEET - 2016

The addition of a catalyst during a chemical reaction alters which of the following quantities?

(a) Internal energy
(b) Enthalpy
(c) Activation energy
(d) Entropy

(c) A catalyst is a substance which alters the reaction rate but itself remains unchanged in amount and chemical composition at the end of the reaction. It provides a new reaction path with a lower energy. barrier (lowering activation energy).

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