Question

the rate of a reaction increases when a catalyst has been added to the reaction mixture. the catalyst a) increases the kinetic energy of the reactants. b) decreases the rate of the reverse reaction. c) increases the number of collisions between reactants. d) alters the enthalpy of reaction. e) provides a new mechanism for the reaction to proceed by.

Answer 1

The rate of  the reaction increases when a catalyst has been added to the reaction mixture by e) providing a new mechanism for the reaction to procced by

Catalyst, in chemistry, a substance that speeds up a reaction without itself being consumed. Enzymes are natural catalysts responsible for many important biochemical reactions.

Most solid catalysts are oxides, sulfides, halides of metals or metallic elements, and metalloid elements boron, aluminum and silicon. Gas and liquid catalysts are usually used in pure form or in combination with suitable carriers or solvents. Solid catalysts are usually dispersed in another material known as a catalyst support.

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