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Byju's Answer
Standard XII
Chemistry
Synthesis of Aldehydes and Ketones Using Carboxylic Acid and Its Derivatives
C 2 H 2 Hg 2+...
Question
C
2
H
2
H
g
2
+
H
2
S
O
4
.
H
2
O
A
[
o
]
−
→
B
. The compound B is?
A
an acid
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B
an aldehyde
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C
ketone
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D
ethanol
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Solution
The correct option is
A
an acid
H
C
≡
C
H
H
g
2
+
H
+
.
H
2
O
C
H
3
C
H
O
o
→
C
H
3
C
O
O
H
(
A
c
i
d
)
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0
Similar questions
Q.
The compound
C
H
3
−
C
H
2
−
O
−
C
H
2
−
C
H
3
belongs to the family of
Q.
An alkene (A)
C
16
H
16
on ozonolysis gives only one product (B)
(
C
8
H
8
O
)
. Compound (B) on reaction with
N
H
2
O
H
H
2
S
O
4
,
Δ
gives N - methyl benzamide the compound 'A' is -
Q.
Ethanol on reaction with alkaline
K
M
n
O
4
gives a compound
′
A
′
while on heating with hot and conc.
H
2
S
O
4
it gives another compound
′
B
′
which decolourises bromine water. Compounds
′
A
′
and
′
B
′
respectively are
Q.
An ester (A) with molecular formula
C
9
H
10
O
2
was treated with excess of
C
H
3
M
g
B
r
and the compound so formed was treated with conc.
H
2
S
O
4
to form olefin (B). Ozonolysis of (B) gave ketone with formula
C
8
H
8
O
which shows positive iodoform test. The structure of (A) is?
Q.
An aliphatic unsaturated hydrocarbon
(
A
)
when treated with
H
g
S
O
4
/
H
2
S
O
4
yields a compound
(
B
)
having molecular formula
C
3
H
6
O
.
(
B
)
on oxidation with concentrated
H
N
O
3
gives two compounds
(
C
)
and
(
D
)
. Compound
(
C
)
when treated with
P
C
l
5
gives compound
(
E
)
.
(
E
)
when reacts with ethanol gives a sweet smelling liquid
(
F
)
. Compound
(
F
)
is also formed when
(
C
)
reacts with ethanol in the presence of concentrated
H
2
S
O
4
.
(i) Identify the compound
A
,
B
,
C
,
D
,
E
and
F
.
(ii) Give the chemical equation for the reaction of
(
C
)
with chlorine in the presence of red phosphorous and name the reaction.
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