Q.
Nitration of aniline in strong acidic medium also gives m - nitroaniline because
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a
inspite of substituents nitro group always goes to only m -position
b
in electrophilic substitution reactions amino group is meta directive
c
in absence of substituents nitro group always goes to m -position
d
in acidic (strong) medium aniline is present as anilinium ion.
answer is D.
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Detailed Solution
The reason for formation of an unexpected amount of m -nitroaniline is that under strongly acidic condition of nitration, most of the aniline is converted into anilinium ion and since, -N+H3 .Due to strong -I effect,very little ortho product(2%) and a large amount of m -nitroaniline(47%) and para nitro aniline (51%) are obtained.
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