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Redox Reactions
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Stoichiometry of redox reactions
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rx114
In acidic medium, what volume of
0.1
M
KMnO
X
4
is needed to oxidise
50
mL
of
0.5
M
FeSO
X
4
completely to
Fe
X
2
(
SO
X
4
)
X
3
?
A
250 mL
B
10 mL
C
1250 mL
D
50 mL
Answer: D
Milliequivalents of
Fe
X
2
+
=
50
×
0.5
×
1
=
25
. Milliequivalents of
KMnO
X
4
=
V
×
0.1
×
5
. Setting equal gives
V
=
25/0.5
=
50
mL
.
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