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Byju's Answer
Standard IX
Chemistry
Valency to Chemical Formula
C 2 H 2 on re...
Question
C
2
H
2
on reaction with 1 mole
N
a
N
H
2
following by reaction with
C
H
3
Br gives 'x' the molecular formula of x is :
A
C
2
H
6
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B
C
4
H
8
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C
C
3
H
4
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D
C
3
H
6
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Solution
The correct option is
D
C
3
H
4
The reaction of
C
2
H
2
with
N
a
N
H
2
is,
C
2
H
2
+
N
a
N
H
2
→
C
2
H
N
a
+
N
H
3
The
C
2
H
N
a
so formed further is reacted with
C
H
3
B
r
.
The reaction is,
C
2
H
N
a
+
C
H
3
B
r
→
C
3
H
4
+
N
a
B
r
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Q.
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Q.
(i) Write the structural formula of acetic acid.
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Q.
K
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C
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H
4
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2
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H
6
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×
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Q.
Calculate the enthalpy of hydrogenation for the reaction ,
C
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⟶
C
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H
6
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H
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C
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m
o
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