Answer :
Final answer:
Palladium serves as a catalyst in the propene and hydrogen reaction, lowering the activation energy required for the reaction.
Explanation:
A catalyst is a substance that increases the rate of a chemical reaction without being consumed. In the reaction between propene and hydrogen, palladium acts as a catalyst, facilitating the reaction by lowering the activation energy needed for the reaction to occur. Palladium, along with platinum and nickel, is commonly used in alkene hydrogenation as a catalyst to speed up the reaction process.
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