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Question
Chemistry
State the oxidation number of carbonyl carbon in methanal and methanoic acid respectively:
Q. State the oxidation number of carbonyl carbon in methanal and methanoic acid respectively:
2503
242
Redox Reactions
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A
0 and 0
0%
B
0 and +2
0%
C
+1 and +2
100%
D
+1 and +3
0%
Solution:
Let the oxidation number of carbonyl carbon in methanal (HCHO) and methanoic acid (HCOOH) is x and y respectively.
In
H
C
H
O
,
2
(
+
1
)
+
x
+
(
−
2
)
=
0
2
+
x
−
2
=
0
x
=
0
In
H
COO
H
,
2
(
+
1
)
+
y
+
2
(
−
2
)
=
0
2
+
y
−
4
=
0
y
=
+
2