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Byju's Answer
Standard XII
Chemistry
Characteristics of Equilibrium Constant
Consider the ...
Question
Consider the following sequence of reactions.
C
2
H
5
C
≡
C
H
C
H
3
M
g
B
r
−
−−−−−−−−−−−−−
→
A
1.
H
C
H
O
⟶
2.
H
3
O
+
B
The product (B) is :
A
C
H
3
C
H
2
O
H
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B
C
2
H
5
C
−
C
H
C
H
2
O
H
|
C
H
3
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C
C
2
H
5
C
≡
C
−
C
H
−
C
H
3
|
O
H
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D
C
2
H
5
C
≡
C
−
C
H
2
O
H
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Solution
The correct option is
D
C
2
H
5
C
≡
C
−
C
H
2
O
H
The product B is
C
2
H
5
C
≡
C
−
C
H
2
O
H
C
2
H
5
C
≡
C
H
C
H
3
M
g
B
r
−
−−−−−−−−−−−−−−−
→
C
2
H
5
C
≡
C
−
+
+
M
g
B
r
A
C
2
H
5
C
≡
C
−
A
1.
H
C
H
O
⟶
2.
H
3
O
+
C
2
H
5
C
≡
C
−
C
H
2
O
H
B
Methyl magnesium bromide abstracts acidic H atom from 1-butyne. The anion thus formed attacks formaldehyde. Acid hydrolysis gives compound B.
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Similar questions
Q.
Which of the following compounds will given racemic mixture on nucleophilic substitution by
O
H
⊖
ion?
(a)
C
H
3
−
C
H
|
C
2
H
5
−
B
r
(b)
C
H
3
−
B
r
|
C
|
C
2
H
5
−
C
H
3
(c)
C
H
3
−
C
H
|
C
2
H
5
−
C
H
2
B
r
Q.
Which of the following reactions can be used to prepare
O
H
|
C
H
3
−
C
−
C
6
H
5
|
C
2
H
5
Q.
Find out the product of the reaction ?
C
H
3
−
C
H
=
C
H
−
C
2
H
5
−
−
→
H
C
l
Q.
Consider the following reaction.
C
H
3
−
O
16
∥
C
−
O
18
−
C
2
H
5
+
H
2
O
16
H
e
a
t
−
−−
→
H
+
The products formed in the reaction are:
Q.
C
H
3
−
C
H
(
C
l
)
−
C
2
H
5
A
l
c
.
K
O
H
−
−−−−−−−
→
C
H
3
−
C
H
=
C
H
−
C
H
3
The above reaction proceeds via
E
1
c
b
mechanism?
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