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n-factor for oxidants and reductants, normality
NEET level
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Difficulty 1 of 3
eq021
The n-factor of
K
X
2
Cr
X
2
O
X
7
in acidic medium, where it is reduced to
Cr
X
3
+
, is:
A
3
B
6
C
2
D
12
Answer: B
Each Cr goes from
+
6
to
+
3
(3 electrons), and there are two Cr atoms per formula unit, so
n
=
2
×
3
=
6
.
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