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KCET 2017 Chemistry Solved Paper
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© examsnet.com
Question : 10
Total: 60
3
C
l
O
3
−
(
a
q
)
→
C
l
O
−
(
a
q
)
+
2
C
l
−
(
a
q
)
is an example of
Oxidation reaction
Reduction reaction
Disproportionation reaction
Decomposition reaction
Validate
Solution:
For the reaction,
C
l
O
3
−
x
−
6
=
−
1
x
=
±
5
(
a
q
)
→
3
C
l
O
−
x
−
2
=
−
1
x
=
±
1
(
a
q
)
+
2
C
l
−
−
1
(
a
q
)
The oxidation number of the chlorine changes from +5 in reactant to +1 and –1 in the products, that is, the chlorate (V) reduces to chloride ions and chlorate (I) ions.
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