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A catalyst decreases activation energy b...

A catalyst decreases activation energy by 15 Kcal and it is observed that rate of reaction in absence of catalyst at 400K is same as rate of reaction in presence of catalyst at 300 K. The activation energy in absence of catalyst will be :

A

30 Kcal

B

20 Kcal

C

60 Kcal

D

15 Kcal

Text Solution

Verified by Experts

The correct Answer is:
C
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GRB PUBLICATION-CHEMICAL KINETICS-F. Effect of Temperature and Catalyst
  1. Which of the following is incorrect regarding catalysis?

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  2. The temperature coefficient of a reaction is 2. Calculate rate of disa...

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  3. A catalyst decreases activation energy by 15 Kcal and it is observed t...

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  4. Activation energy of a chemial reaction can be determined by …...

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  5. {:(A rarr B, k(A)=10^(15)e^(-2000//T),),(C rarr D, k(C )=10^(14)e^(-10...

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  6. The rate of a reaction gets doubled when the temperature change from 7...

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  7. Which of the following statements is correct ?

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  8. Which of the following statement is/are correct with respect to Arrhen...

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  9. In the presence of a catalyst, the heat evolved or absorbed during the...

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  10. In gaseous reactions important for the understanding of the upper atom...

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  11. Consider the Arrhenius equation given below and mark the correct op...

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  12. An iron catalyst is used in the Haber process in which process N2 and ...

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  13. Catalyst in a chemical reaction :

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  14. All of the following are expected to affect the rate of an irreversibl...

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  15. A catalyst speeds up a chemical reaction by :

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  16. The activation energy ofr a reaction can be determined by measuring th...

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  17. Most reactions occure more rapidly at high temperatures than at low te...

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  18. Two unimolecular reactions, I and II have the same rate constant at 25...

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  19. 2NO(g) +Cl(2)(g) rarr 2NOCl, DeltaH=-38 KJ If the activation energy ...

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  20. A catalyst affects the rate of a chemical reaction by:

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