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(D) catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. $1$. It provides a

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All of these

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(D) catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. $1$. It provides an alternative pathway with lower activation energy $(E_a)$. $2$. Although it may participate in the reaction mechanism,it is regenerated at the end of the process. $3$. It speeds up both the forward and backward reactions equally,thus it does not change the equilibrium constant $(K_{eq})$ or the position of equilibrium. Therefore,all the given statements are correct.

Which of the following statements about a catalyst is true?

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