How does a catalyst change during a reaction?(a) Physically(b) Mass-wise(c) Chemically(d) QuantitativelyThe question was posed to me in an international level competition.This question is from Surface Chemistry in chapter Surface Chemistry of Chemistry – Class 12

How does a catalyst change during a reaction?(a) Physically(b) Mass-wi

1.	How does a catalyst change during a reaction?(a) Physically(b) Mass-wise(c) Chemically(d) QuantitativelyThe question was posed to me in an international level competition.This question is from Surface Chemistry in chapter Surface Chemistry of Chemistry – Class 12
Answer» RIGHT option is (a) Physically To elaborate: Yes, a catalyst can be changed physically in a CHEMICAL reaction but by definition a catalyst is not consumed as a reactant. It must be REGENERATED BACK into its original form after the reaction has taken place. Its function is to lower the reaction POTENTIAL allowing the reaction between reactants to take place.

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