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.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Assertion is incorrect but Reason is correct

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Solution

The correct option is B Both Assertion and Reason are correct but Reason is not the correct explanation for 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. The decrease in temperature favours an exothermic reaction and increase in temperature favours an endothermic reaction.
With the increase in temperature, the extent of reaction increases. This is because the number of molecules having energy equal to or greater than the activation energy increases and the number of effective collisions increases.

Thus, both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Similar questions

Q. For the following Assertion and Reason, the correct option is:
Assertion: The

p H

of water increases with increase in temperature.

Reason: The dissociation of water into

H^{+}

and

O H^{-}

an exothermic reaction.

Q. Assertion: The impurities such as

{SiO}_{2}

present in iron ore is removed by

{CaCO}_{3}

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Reason:

CaO

formed by decomposition of

{CaCO}_{3}

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Assertion (A) Ethanol is a weaker acid than phenol.
Reason (R) Sodium ethoxide may be prepared by the reaction of ethanol with aqueous NaOH.
(a) Assertion and reason both are correct and reason is correct explanation of assertion.
(b) Assertion and reason both are wrong statements.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion is wrong statement but reason is correct statement.
(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

Assertion (A) Order of the reaction can be zero or fractional.

Reason (R) We cannot determine order from balanced chemical equation.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

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