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Tardigrade
Question
Chemistry
In the following reaction, A and B, respectively are A ->[H B r]C2 H5 B r ->[B]A
Q. In the following reaction,
A
and
B
, respectively are
A
H B r
C
2
H
5
B
r
B
A
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Punjab PMET
Punjab PMET 2010
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A
C
2
H
4
, alc.
K
O
H
/Δ
B
C
2
H
5
Cl
, aq.
K
O
H
/Δ
C
C
H
3
O
H
, aq.
K
O
H
/Δ
D
C
2
H
2
,
PB
r
3
Solution:
H
2
C
=
C
H
2
HBr
C
H
3
C
H
2
B
r
Alc. KOH (B)
H
2
C
=
C
H
2
Hence,
A
and
B
are respectively
C
2
H
4
and alc.
K
O
H
.
Alc.
K
O
H
causes the dehydrohalogenation (ie, removal of hydrogen and halogen) reactions.