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Which of the following expkains the incr...

Which of the following expkains the increase of reaction rate by a catalyst?

A

Catalyst provides the necessary energy to the colliding molecules to cross the barrier

B

Catalyst decreases the rate of backward reacion so that the rate of forward reaction increases

C

Catalyst decreases the enthalpy change of the reaction

D

Catalyst provides an alternative path of lower activation energy

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The correct Answer is:
D
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AAKASH SERIES-CHEMICAL KINETICS-LEVEL-1 (EXERCISE -I COLLISION THEORY:)
  1. For an exothermic chemical process occurring in two steps as (i) A+B...

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  2. The minimum energy required for molecules to enter into chemical react...

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  3. In a reaction, threshold energy is equal to

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  4. The value of activation energy for a chemical reaction primarily depen...

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  5. For a reversible reaction AhArrB which one of the following statements...

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  6. Wrong statement among the following is

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  7. For the reaction A+BhArrC+D, the forward reaction is exothermic. The a...

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  8. Collision theory satisfactorily explains

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  9. According to collision theory of reaction rates, the activation energy...

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  10. Increase in the concentration of the reactants leads to the change in

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  11. The population of activated molecules can be increased by

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  12. Consider an endothermic reaction XtoY with the activation energies E(b...

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  13. Which of the following expkains the increase of reaction rate by a cat...

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  14. An endothermic reactio AtoB ha s an activation energy as kKJ"mol"^(-1)...

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  15. The plot of log k vs 1/T helps to calculate

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

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  17. In the equilibrium reaction A+BhArrC+D, the activation energy for the ...

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  18. Plots showing the variation of the rate constant (k) with temperature ...

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