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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 collision molecules to cross the barrier

B

Catalyst decreases the rate of backward reaction 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-Objective Exercise - 1
  1. Consider an endothermic reaction XtoY with the activation energies E(b...

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

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

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

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

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  6. Chemical reactions with very high E(a) values are generally

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  7. Pick the appropriate choice about collision theory of reaction rates. ...

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  8. The Arrhenius equation expressing the effect of temperature on the rat...

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  9. If the activation energy for the forward reaction is 150kJ mol^(-1) an...

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  10. In collision theory according to arrhenius plot, intercept is equal to

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  11. Which of the following statement is in accordance with the Arrhenius e...

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  12. If the first order rate constants for the decomposition of enthy 1 iod...

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  13. For the reaction H(2)+Br(2)to2HBr, the rate expression is rate =K[H(2)...

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  14. For the following elementary step (CH(3))(3)CHr((aq))to(CH(3))C((aq))^...

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  15. The units of rate constant for the reaction obeying rate expression r=...

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  16. In the following sequence of reactions M overset(K(1))(to)Noverset(K(2...

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  17. Two gases A and B are in a container. The experimental rate law for th...

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  18. ……………….of a reaction cannot be determined experimentally.

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  19. The rate expression for the reaction A((g))+B((g))toC((g)) is rate =kC...

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  20. For a reaction pA+qBto products the rate law expression is r=k[A]^(1)[...

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