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Activation energy is

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A hydrogenation reaction is carried out at 500 K. If the same reaction is carried out in the presence of catalyst at the same rate, the temperature required is 400 K. Activation energy of reaction if the catalyst lowers the activation energy barrier by 40 kJ/mol

"Activation energies are low for fast reaction and high for slow reactions" a) Justify the statement. b) The rate of a reaction quadruples when the temperature changes from 310 K to 330 K. Calculate the activation, energy of the reaction R=8.314 Jk^(-1) (mol)^(-1)

On introducing a catalyst at 500 K, the rate of a first order reaction increases by 1.718 times. The activation energy in the presence of catalyst is 6.05 kJ mol^(-1) . The slope of the plot of In k (sec^(-1)) against 1/T in the absence of catalyst is:

When the activation energies of the forward and backward reactions are equal, then:

The activation energy of a reaction is zero. The rate constant of this reaction

A catalyst lowers the activation energy of the forward reaction by 10 kJ "mol"^(-1) ,What effect it has on the activation energy of the backward reaction?

If a reaction A + B to C , is exothermic to the extent 40 kJ/mol and forward reaction has an activation energy 60 kJ/mol, the activation energy for the reverse reaction will be:

The activation energy of exothermic reaction ArarrB is 80 kJ mol^(-1) . The heat of reaction is 200 kJ mol^(-1) . The activation energy for the reaction BrarrA (in kJ mol^(-1) ) will be

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  9. For the reaction N{2}(g) + 3H{2}(g)rarr2NH{3}(g) , how are the rate of...

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  11. The following mechanism has been proposed for the reaction of (NO) wit...

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  12. Which of the following process does not involve a catalyst?

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  13. A catalyst increases the rate of reaction because it : increases th...

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  14. A catalyst is used : only for increasing the velocity of the reactio...

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  15. Which of the following statements regarding catalyst is not true? A c...

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  16. According to absorption theory of catalysis, the speed of the reaction...

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  17. Enzymes are

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  18. Enzymes are

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  19. The enzyme which catalyse the conversion of glucose to ethanol is

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  20. Half change time for a 1st order reaction is 20 minutes, hence the rat...

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