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Which of the following statement is no...

Which of the following statement is not correct for the catalyst ?

A

It catalyses the forward and backward reaction to the same extent

B

It alters `DeltaG` of the reaction

C

It is a substance that does not change the equilibrium constant of a reaction

D

It provides an alternate mechanism by reducing activation energy between reactants and products.

Text Solution

Verified by Experts

The correct Answer is:
B
Presence of catalyst does not change `DeltaG` or `DeltaH` value. Hence, (b) is not correct.
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PRADEEP-CHEMICAL KINETICS-NCERT EXEMPLAR PROBLEMS WITH ANSWERS, HINTS AND SOLUTTIONS (MULTIPLE CHOICE QUESTIONS-1)
  1. The role of a catalyst is to change

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

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  3. Activation energy of a chemical reaction can be determined by

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  4. Consider Fig. below and mark the correct option.

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  5. Consider a first order gas phase decomposition reaction given below: ...

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  6. According to Arrhenius equation rate constant K is equal to A e.^(-...

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

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  8. A graph of volume of hydrogen released vs time for the reaction betwee...

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  9. Which of the following statement is not correct about order of a ...

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  10. Consider the graph given in figure . Which of the following optio...

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  11. Which of the following statements is correct ?

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  12. Which of the following expression is correct for the rate of reac...

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  13. Which of the following graphs represents exothermic reaction ?

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  14. Rate law for the reaction, A + 2B to C is found to be Rate = k [A] [...

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  15. Which of the following statements is incorrect about the collision the...

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  16. A first order reaction is 50% completed in 1.26 xx 10^(14)s. How much ...

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  17. Compounds 'A' and 'B' react according to the following chemical equati...

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  18. Which of the following statement is not correct for the catalyst ...

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  19. The value of rate constant of a pseudo first order reaction

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  20. Consider the reaction A to B. The concentration of both the reactan...

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