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Byju's Answer
Standard XII
Chemistry
Valency and Oxidation State
Choose the co...
Question
Choose the correct option regarding change in oxidation number of the underlined atom in the following conversion.
C
a
O
C
l
2
–
––
–
+
H
2
O
→
C
a
(
O
H
)
2
+
C
l
2
A
0
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B
1
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C
-1
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D
None of these
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Solution
The correct option is
A
0
In
C
a
O
C
l
2
,
C
l
has two oxidation states:
+
1
and
−
1
as shown in the figure.
C
a
(
O
C
l
(
+
1
)
)
C
l
(
−
1
)
+
H
2
O
⟶
C
a
(
O
H
)
2
+
C
l
(
0
)
2
The net change in Oxidation state of
C
l
=
(
−
1
)
+
(
+
1
)
=
0
Hence, the A is the correct option.
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0
Similar questions
Q.
Choose the correct option regarding change in oxidation number of the underlined atom in the following conversion.
M
n
–
––
–
O
−
4
+
3
O
H
−
→
M
n
O
2
+
H
2
O
Q.
Choose the correct option regarding change in oxidation number of the underlined atom in the following conversion.
H
2
S
–
–
O
5
+
2
K
I
→
K
2
S
O
4
+
H
2
O
+
I
2
Q.
Choose the correct option regarding change in oxidation number of the underlined atom in the following conversion.
A
s
2
–
––
–
S
3
+
O
H
−
→
A
s
S
3
−
4
Q.
In the aqueous solution, bleaching powder behaves as
C
a
O
C
l
2
+
H
2
O
→
C
l
2
+
C
a
(
O
H
)
2
.
The equivalent weight of
C
a
O
C
l
2
is
M
x
, where x is :
Q.
In the following sequence of reactions:
C
a
O
C
l
2
+
H
2
O
⟶
C
a
(
O
H
)
2
+
C
l
2
2
K
I
+
C
l
2
⟶
2
K
C
l
+
I
2
I
2
+
2
N
a
2
S
2
O
3
⟶
N
a
2
S
4
O
6
+
2
N
a
I
Calculate moles of
N
a
2
S
2
O
3
required for complete reduction of
I
2
obtained from
127
g
C
a
O
C
l
2
sample (
50
%
purity).
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