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Standard XII

Chemistry

Electrophilic Substitution Reactions of Haloarenes

Assertion : ...

Question

Assertion : $- {N H}_{2}$ group of aniline is ortho, para directing in electrophilic substitutions. Reason: $- {N H}_{2}$ group stabilises the arenium ion formed by the ortho, para attach of the electrophile

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
$- N H_{2}$ group of aniline is ortho, para directing in electrophilic substitutions.
$- N H_{2}$ group stabilises the arenium ion formed by the ortho, para attach of the electrophile.
$- N H_{2}$ group has unshared pair of electrons on N atom. It is electron releasing due to +E and +M effect. It increases the electron density on benzene nucleus in ortho and para positions and activates the ring.
Hence, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Similar questions

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Reason (R) Nitro group helps in the stabilisation of the phenoxide ion by dispersal of negative charge due to resonance.
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(c) Assertion is correct statement but reason is wrong statement.
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Assertion (A) IUPAC name of the compund
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(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.
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(e) Both assertion and reason are correct statements but reason is not correct explanation of assertion.

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Assertion :−NH2 group of aniline is ortho, para directing in electrophilic substitutions. Reason: −NH2 group stabilises the arenium ion formed by the ortho, para attach of the electrophile

Assertion : $- {N H}_{2}$ group of aniline is ortho, para directing in electrophilic substitutions. Reason: $- {N H}_{2}$ group stabilises the arenium ion formed by the ortho, para attach of the electrophile