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The variation of rate constant with temp...

The variation of rate constant with temperature can be explained by Arrhenius equation. However , the can be explained by Activation energy is found to be temperature dependent/In such cases `(d "in" K)/(dT)=(E_(a))/(RT^(2))` should be used to predict variation of rate constant with tempreature. On the basic of this information , answer the question that follow :
If Arrhenius constant and `E_(a)` (activation energy0 are assumed to be constant then which of the following graph will be correct

A

B

C

D

Text Solution

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The correct Answer is:
C
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The variation of rate constant with temperature can be explained by Arrhenius equation. However , the can be explained by Activation energy is found to be temperature dependent/In such cases (d"in"K)/(dT)=(E_(a))/(RT^(2)) should be used to predict variation of rate constant with tempreature. On the basic of this information , answer the question that follow : If for a reaction in K=20-(20)/(T)+3 in T then E_(a) at 300 K will be

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