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Byju's Answer
Standard XII
Chemistry
Nucleophilic Substitution Reaction
RNO2 is reduc...
Question
R
N
O
2
is reduced with
S
n
/
H
C
l
. Product formed is
A
R
N
H
O
H
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B
R
N
H
2
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C
R
N
H
+
3
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D
R
2
N
H
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Solution
The correct option is
B
R
N
H
2
R
N
O
2
+
6
H
S
n
/
H
C
l
−
−−−−
→
R
N
H
2
+
2
H
2
O
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0
Similar questions
Q.
When nitrobenzene is reduced with a metal and acid (Sn/HCl, Zn/HCl etc.),
which of the following product(s) is obtained?
Q.
Assertion :
S
n
reacts with
H
C
l
to produce
H
2
gas. Reason:
S
n
is a better reducing agent than
H
2
.
Q.
Assertion :
F
e
C
l
3
can be reduced to
F
e
C
l
2
by
S
n
C
l
2
as well as by the addition of
S
n
into it. Reason: This reaction is possible since
S
n
4
+
is more stable than
S
n
2
+
(inert-pair effect)Also,
F
e
C
l
3
solution is acidic due to hydrolysis.
S
n
added reacts with
H
C
l
forming nascent hydrogen that can reduce
F
e
C
l
3
to
F
e
C
l
2
Q.
4-nitrotoluene is treated with bromine to get compound '
P
' which is reduced with
S
n
and
H
C
l
to get compound '
Q
'. '
Q
' is diazotized and the product is treated with phosphinic acid to get compound '
R
'. '
R
' is oxidized with alkaline solution
K
M
n
O
4
to get the final product. Identify the final product.
Q.
A buffer solution,
0.080
M
in
N
a
2
P
O
4
and
0.020
M
in
N
a
3
P
O
4
is prepared. The electrolytic oxidation of
1.0
mmol of the organic compound
R
N
H
O
H
is carried out in
100
m
L
of the buffer. The reaction is as follows:
R
N
H
O
H
+
H
2
O
⟶
R
N
O
2
+
4
H
+
+
4
e
Calculate the approximate
p
H
of the solution after the oxidation is complete.
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