Amino group is ortho, para directing for aromatic electrophilic substitution. On nitration of aniline with concentrated acids, a good amount of meta nitro aniline is obtained. This is due to

- NH₂ becomes - NH^-NO₂⁺, which is meta directing

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- NH₂ becomes - NH⁺SO₄^-2, which is meta directing

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- NH₂ becomes - NH₃⁺, which is meta directing

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In nitration mixture, ortho and para activity of NH₃ group is completely lost

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Solution

The correct option is C - NH₂ becomes - NH₃⁺, which is meta directing
NH₂ is o & p - directing group where as NH₃⁺ is meta directing group

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Similar questions

Q. Amino group is ortho, para-directing for aromatic electrophilic substitution. On nitration of aniline good amount of m-nitroaniline is obtained. This is due to:

Q. Although the amino group is 0- and p-directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of nitroaniline.
If this is true enter 1 if false enter 0.

Q. When nitration of aniline occurs, ortho, meta and para nitro aniline is formed. Arrange them in the increasing order of their

%

yield.

Q. 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

Account for the following:

(i) pK_bof aniline is more than that of methylamine.

(ii) Ethylamine is soluble in water whereas aniline is not.

(iii) Methylamine in water reacts with ferric chloride to precipitate hydrated ferric oxide.

(iv) Although amino group is o, p− directing in aromatic electrophilic substitution reactions, aniline on nitration gives a substantial amount of m-nitroaniline.

(v) Aniline does not undergo Friedel-Crafts reaction.

(vi) Diazonium salts of aromatic amines are more stable than those of aliphatic amines.

(vii) Gabriel phthalimide synthesis is preferred for synthesising primary amines.

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Amino group is ortho, para directing for aromatic electrophilic substitution. On nitration of aniline with concentrated acids, a good amount of meta nitro aniline is obtained. This is due to

The correct option is C - NH2 becomes - NH3 +, which is meta directingNH2 is o & p - directing group where as NH3+ is meta directing group

The correct option is C - NH₂ becomes - NH₃⁺, which is meta directing
NH₂ is o & p - directing group where as NH₃⁺ is meta directing group