State true or false.

A catalyst is a substance which increases the rate of the reaction without itself undergoing any change.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- A catalyst is any substance that, when added to a reaction mixture, changes the rate of the reaction without causing the reactant to be consumed and transformed into the product, i.e., the catalyst does not modify the chemical reaction.
A catalyst is always employed to speed up the chemical reaction, or more accurately, to change how quickly it happens. The catalyst only creates a surface or favourable environment on which the reactants can react quickly and efficiently to produce the desired products. The catalyst lowers the chemical reaction's activation energy, enabling the reaction to continue more readily.
The additional minimum energy needed for the reactant molecules or atoms to go through a chemical reaction and produce a product is known as the activation energy. More reactants can be transformed into products thanks to the catalyst's lower activation energy, which accelerates the pace of reaction.
In light of this, we can say that a catalyst is a substance that speeds up a chemical reaction without changing itself.
Hence, the correct answer is option 1.

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