Assertion :Acyl halide are more reactive than acid substance amide toward nucleophilic substitution. Reason: $X^{-}$ are better leaving group than $N H_{2}^{-}$ .

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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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Assertion
Acyl halide are more reactive than acid amide toward nucleophilic substitution.
Reason
$X^{-}$ are better leaving group than $- N H_{2}^{-}$ .
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Note: Acid chlorides are most reactive among the acid derivatives as chloride is highly electronegative and it reduces the electron density greatly at $- C^{+} - O^{-}$ so it is very easily attacked by a nucleophile.
$X^{-}$ is better-leaving group than $- N H_{2}^{-}$

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Similar questions

Q. Read the assertion and reason carefully to mark the correct option out of the options given below:
(a)If both assertion and reason are true and the reason is the correct explanation of the assertion.
(b)If both assertion and reason are true but reason is not the correct explanation of the assertion.
(c)If assertion is true but reason is false.
(d)If assertion is false but reason is true.

Assertion: Phenol is more reactive than benzene towards electrophilic substitution reaction.
Reason : In the case of phenol, the intermediate phenoxide is more resonance stabilized.

Q. Assertion
If BOD level of water in reservoir is less than 5 ppm it is not polluted.

Reason
High biological oxygen demand means low activity of bacteria in water.

Q. Assertion: The compressibility factor for

H_{2}

and

H e

(1 + \frac{P b}{R T})

Reason: The compressibility factor for

H_{2}

and

H e

can be derived from Van der Waal's equation.

Assertion (A) p-nitrophenol is more acidic than phenol.
Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
(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 (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.

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Assertion :Acyl halide are more reactive than acid substance amide toward nucleophilic substitution. Reason: X− are better leaving group than NH−2.

Assertion :Acyl halide are more reactive than acid substance amide toward nucleophilic substitution. Reason: $X^{-}$ are better leaving group than $N H_{2}^{-}$ .