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Which of the following is UNTRUE about catalysts?


Catalysts appear at the beginning of a reaction, may participate in the reaction and be regenerated at the end of the reaction, or do not react at all.


Acids and bases can act as catalysts.


Unreactive catalysts can increase the rate of reactions by simply providing a larger surface area on which reactions can occur.


Catalysts can be generated during a reaction and consumed before its end.

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