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Theories of Catalysis

Is rate of re...

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Is rate of reaction only for reversible reactions because forward and backward reaction happen only in reversible reactions

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Q. For a reversible reaction, the rate constants for the forward and backward reactions are

2.38 \times 10^{- 4}

8.15 \times 10^{- 5}

respectively. The equilibrium constant for the reaction is:

Q. Assertion: The overall rate of a reversible reaction may decrease with the increase in temperature.
Reason: When the activation energy of a forward reaction is less than that of its backward reaction, then the increase in the rate of the backward reaction is more than that of the forward reaction on increasing the temperature.

Q. If the activation energies of the forward and backward reactions of a reversible reaction are

E_{a} (f)

E_{a} (b)

, respectively. The

Δ E

of the reaction is ...........

Q. The energy of activation of a reversible reaction is 6 kcal

(E_{a}

forward) and heat of reaction is -3 kcal. The energy of activation for backward reaction in kcal is:

Q. The equilibrium constant

K_{c}

of a reversible reaction is 10. The rate constant for the reverse reaction is 2.8. What is the rate constant for the forward reaction?

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