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which of these statements is not true about chemical reaction rates

A:temperature can change a reaction rate

B:temperature does not affect the reaction rate

C:temperature can decrease the reaction rate

D:the amount of reactants can increase the reaction rate

Verified Answer :

risingstarl96a1

Answer B because temperature can affect the reaction rate.

Answer: The statement (B) is not true about chemical reactions.

Explanation:

A chemical reaction rate is affected by the several factors few of which are temperature, concentration of reactants, surface area etc.

In a chemical reaction, if temperature is increased then the rate of reaction will increase because it will increase the average kinetic energy of the reactant molecules. Thus, large number of molecules will have minimum energy required for an effective collision.

It is known that increasing the amount of reactants will increase the rate of reaction.

Therefore, rate of reaction will change if concentration or temperature is changed.

Hence, the statement (B) is not true about chemical reactions.

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