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A catalyst increases rate of reaction by...

A catalyst increases rate of reaction by

A

decreasing enthalpy

B

decreasing internal energy

C

decreasing actication energy

D

increasing activeation energy

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The correct Answer is:
C
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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

A catalyst increases the rate of a reaction by:

MARVEL PUBLICATION-SURFACE CHEMISTRY-MULTIPLE CHOICE QUESTIONS - STANDARD LEVEL (2. Catalysis)
  1. the process whichh is catalysed by one of the product is called

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  2. Which one of the following is an example of homogeneous catalysis ?

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  3. A catalyst increases rate of reaction by

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  4. The role of a catalyst in a reversble reaction is to

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  5. Which of the following kinds of catalysis can be explained by the adso...

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  6. A biological catalyst is

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  7. A certain reaction ocuurs in two steps as (I) 2SO(2(g))+2NO(2(...

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  8. In the decomposition of H(2) O(2), The concentration of colloidal plat...

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  9. Due to use of catalyst in reaction

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  10. Poisoning of catalyst means

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  11. In the chloroform solution, 2% ethanol is added, which acts as

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  12. Which of the following is not true for homogeneous catalysis ?

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  13. Select he catalyst which can help in conversion of ethene into acetald...

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  14. Which of the following homogeneous catalyst used in the conversion of ...

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  15. What are enzymes ?

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  16. Which one of the following is degraded by enzyme amylase?

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  17. To trap glucose in the cell, glucokinase is the enzyme, used by which ...

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  18. Which pair of the catalyst is used to convert ethanol into ethene and ...

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  19. Given the sequence of reactions, NH(4) NO(2(aq)) +OH((aq))^(-) rarr ...

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  20. In the reaction H(2) O (2(aq)) overset(I^(-))(rarr)H(2) O((l)) + 1/2...

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