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The activation energy of a reaction is z...

The activation energy of a reaction is zero. The rate constant of the reaction:

A

Increases with increase of temperature

B

Decreases with decrease of temperature

C

Decreases with increase of temperature

D

Independent of temperature

Text Solution

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The correct Answer is:
D
`K=Ae^(-Ea//RT),Ea=0` then `((-E_(a))/(RT))=0`
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Arrhenius studied the effect of temperature on the rate of a reaction and postulated that rate constant varies with temperature exponentially as k=Ae^(-E_(a)//RT) . For most of the reactions it was found that the temperature coefficient of the reaction lies between 2 to 3. The method is generally used for finding the activation energy of a reaction. Keeping temperature constant, the effect of catalyst on the activation energy has also been studied by studying how much the rate of reaction changes in the presence of catalyst. In most of the cases, it is observed that catalyst lowers the activationenergy barrier and increases the rate of reaction. Which of the following plot will be linear?

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AAKASH SERIES-CHEMICAL KINETICS-LEVEL-II(LECTURE SHEET EXERCISE-I SINGLE & ONE OR MORE THAN ONE CORRECT ANSWER)
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  8. Unit of frequency factor A in : KL+AE^(-Ea//RT) is

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  9. Rate constant K varies with temperature by equation log K("min"^(-1))=...

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  11. Select the correct statements(s)

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  20. An organic compound A decomposes following two parallel first order re...

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