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Byju's Answer
Standard XII
Chemistry
Synthesis of Amides
CH 4 g + 1 /...
Question
C
H
4
(
g
)
+
1
/
2
O
2
(
g
)
⟶
C
H
3
O
H
(
l
)
If
Δ
c
H
of
C
H
4
=
−
x
and
Δ
c
H
of
C
H
3
O
H
=
−
y
Then,
Δ
H
for reaction:
A
x
−
y
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B
x
+
y
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C
−
x
−
y
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D
−
x
+
y
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Solution
The correct option is
B
x
−
y
Given,
C
H
4
+
2
O
2
→
C
O
2
+
2
H
2
O
.....(i)
△
H
=
−
x
C
H
3
O
H
+
3
2
O
2
→
C
O
2
+
2
H
2
O
.....(ii)
△
H
=
−
y
____________________________________________________
Subtracting (ii) from (i)
C
H
4
+
1
2
O
2
→
C
H
3
O
H
△
H
=
−
x
+
y
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0
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