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Byju's Answer
Standard XII
Chemistry
Redox Reactions
2× 10-3 moles...
Question
2
×
10
−
3
moles of an acid containing
A
n
+
ion uses up
1.2
×
10
−
3
moles of
M
n
O
−
4
for the oxidation of
A
n
+
to
A
O
−
3
. The value of
n
is:
A
5
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B
2
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C
3
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D
4
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Solution
The correct option is
C
2
2
×
10
−
3
moles of acid corresponds to
1.2
×
10
−
3
moles
M
n
O
−
4
.
Equating the equivalents of acid and permanganate ion,
Hence,
2
×
10
−
3
×
5
−
n
=
1.2
×
10
−
3
×
5
,
n
=
2
.
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