Q.

According to the Arrhenius equation,

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a

a high activation energy usually implies a fast reaction.

b

rate constant increases with increase in temperature. This is due to a greater number of collisions whose energy exceeds the activation energy.

c

higher the magnitude of activation energy, stronger is the temperature dependence of the rate constant

d

the pre-exponential factor is a measure of the rate at which collisions occur, irrespective of their energy.

answer is B.

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Detailed Solution

As activation energy increases. Rate of reaction decreases,K =Ae -Ea /RT  K α T by Increasing temperature rate constant also increases
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