Which of the following would NOT increase the rate of a reaction? A. Decreasing

Question

Which of the following would NOT increase the rate of a reaction? A. Decreasing the temperature B. Decreasing the size of the reactants C. Adding a biological catalyst or enzyme D. Increasing the concentration of the reactants Which of the following would NOT increase the rate of a reaction? A. Decreasing the temperature B. Decreasing the size of the reactants C. Adding a biological catalyst or enzyme D. Increasing the concentration of the reactants A. Decreasing the temperature B. Decreasing the size of the reactants C. Adding a biological catalyst or enzyme D. Increasing the concentration of the reactants

Explanation / Answer

The answer to the given question is option A

EXPLAINATION:

Rate of reaction depends on collisions between the reactant and enzyme molecules.

Only few collisions lead to chemical change they are successful collisions.

Rate of reaction can be altered by

1)temperat tem

2)catalyst

3)concentration

4)particle size

- by increasing temperature,the particles have more energy to move and collide and get more chances of successful collisions.it increases the temperature coefficient of reaction.

- so,if we decrese temperature rate of reaction slightly decreases.(answer)

- if concentration of reactants increases more particles move and there is more formation of products,thus increasing the rate of reaction.

-by decreasing the size particle,the surface area increases which increases enzyme activity as it has more surface to react faster,smaller surface more successful collisions.

-use of biological catalyst or other catalyst increases the rate of reaction as it provides reactants surface to act on fastly and increases the rate of reaction vastly.

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