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Vant Hoff's Equation and Effect of Temperature on Equilibrium Constant

For a given e...

Question

For a given equilibrium reaction, an increase in temperature will

A

Increase the rate of the exothermic reaction more than that of the endothermic reaction.

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B

Increase the rate of the endothermic reaction more than that of the exothermic reaction.

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C

Increase both rates equally.

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D

Decreases both rates equally.

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Solution

The correct option is B
Increase the rate of the endothermic reaction more than that of the exothermic reaction.

The rate of endothermic reaction (where heat is absorbed) will increase more than that of exothermic reaction. The reason will be explained better in the chapter Chemical kinetics

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Similar questions

Q. Assertion :For an exothermic reaction, extent of reaction increases with increase in temperature. Reason: With increase in temperature, the rate of forward reaction increases more.

Q. Assertion :The value of K for a reaction may increase or decrease with increase in temperature depending upon whether the reaction is exothermic or endothermic. Reason: With increase in temperature, the extent of reaction increases.

Q. The variation of K and

K_{f}

K_{b}

with temperature shows the following effects:
(i) For endothermic reaction K increases and

K_{f}

K_{b}

also increases with temperature.
(ii) For endothermic reaction K decreases and

K_{f}

K_{b}

also decreases with temperature.
(iii) For exothermic reaction K decreases and

K_{f}

K_{b}

both increases with temperature.
(iv) For exothermic reaction K increases and

K_{f}

K_{b}

decreases with temperature.
(v) For exothermic reaction K decreases and

K_{f}

K_{b}

both decreases with temperature.

Q. On increasing temperature, the equilibrium constant of exothermic and endothermic reactions __________ and ________ respectively:

Q. The rate of an exothermic reaction increases with increase in temperature.

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