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A catalyst increases rate of reaction by...

A catalyst increases rate of reaction by

A

decreasing enthalpy

B

decreasing interval energy

C

decreasing activation energy

D

increasing activation energy

Text Solution

Verified by Experts

The correct Answer is:
C
A catalyst can alter the activation energy i.e., it decreases the activation energy.
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A catalyst increase rate of reaction by :

A catalyst increases the rate of reaction by :

Assertion : A catalyst increases the rate of reaction without itself undergoing any permanent chemical change. Reason : A catalyst changes the Gibbs energy (Delta G) of the reaction and equilibrium constant of the reaction.

(A) Positive catalyst increases the rate of reaction (R) Catalyst decrease the value of DeltaG^(@)

A : A positive catalyst increases the rate of reaction . R : A positive catalyst alters reaction mechanism and decreases activation energy.

(A) A catalyst increases the rate of areaction. (R)In presence of a catalyst, the activation energy of the reaction increases.

Catalyst increses the rate of reaction

DINESH PUBLICATION-RATES OF REACTIONS AND CHEMICAL KINETICS-Revision Question
  1. If reaction between A and B to give C shows first order kinetics in A ...

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  2. For a first order reaction, the half-life period is independent of

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  3. A catalyst increases rate of reaction by

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  4. For a first order reaction, obatin a positive slope, we need to plot [...

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  5. Given t(1//2) =3 hr. Then how many gram of a substance will remain aft...

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  6. For the reaction A + B rarr C + D, doubling the concentration of both ...

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  7. The effect of temperature on reaction rate is given by

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  8. The decomposition of a substance follows first order kinetics. If its ...

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  9. For a first order reaction, the plot of log k against 1/T is a straigh...

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  10. "1 dm"^(3) of 2 M CH(3)COOH is mixed with "1 dm"^(3) of 3 M ethanol to...

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  11. ROOR'+H(2)Ooverset("HCl")(rarr)RCOOH+R'OH ltbtgt What type of reaction...

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  12. 75 % of first order reaction is complete in 30 minutes. What is the ti...

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  13. For a given reaction, t(1//2) = 1 //ka. The order of this reaction is

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  14. The conversion of A rarr B follows second-order kinetics. Doubling the...

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  15. The activation energy of a reaction can be determined by

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  16. For the reaction 2N(2)O(5) rarr 4NO(2)+O(2) rate of reaction and rate ...

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  17. The time taken for 90% of a first order reaction to be completed is a...

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  18. The half-life period for the first order reaction is 693 seconds. The ...

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  19. The reaction 2N(2)O(5)hArr 2N(2)O(4)+O(2) is

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  20. Collision theory is application to

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