Question

Which factors ALL increase reaction rate?


decrease temperature, stir, increase surface area, remove catalyst

none of these

increase temperature, increase surface area, add catalyst, stir

increase temperature, stir, decrease surface area, add catalyst

Answer 1

Answer:

increase temperature, increase surface areas, add catalyst, stir

Answer 2

The rate of reaction can be increased with the increase in temperature, surface area, adding catalyst and allowing stirring. Thus, option C is correct.

What is rate of reaction?

The rate of reaction is given as the rate of formation of product or the rate of disappearance of reactant in unit time.

The rate of reaction can be affected with:

• Increase in temperature - It will increase the collisions between the reactants, and thereby the rate.

• Increase in surface area - It results in increased interaction of the reactant molecules for the formation of product.

• Catalyst - It lowers the activation energy of the reactant, and thereby increases the rate of reaction.

• Stirring - It mediates the increase in the collisions and the surface area, and resulting in increased rate of reaction.

Thus, the rate of reaction can be increased with the increase in temperature, surface area, adding catalyst and allowing stirring. Thus, option C is correct.

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