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Activity and Selectivity

Activity and Selectivity

(1) Activity: Activity is the ability of catalysts to accelerate chemical reaction, the degree of acceleration can be as high as times in certain reactions. For example reaction between and to form in presence of platinum as catalyst takes place with explosive violence.

In absence of catalyst, and can be stored indefinitely without any reaction.

(2) Selectivity : Is the ability of catalysts to direct reaction to yield particular products (excluding other).

Example :

(i)

(ii)

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