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Question
Chemistry
Which of the following statements is correct about equivalent weight of KMnO4?
Q. Which of the following statements is correct about equivalent weight of
K
M
n
O
4
?
2135
191
The d-and f-Block Elements
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A
It is one third of its molecular weight in alkaline medium
B
It is one fifth of its molecular weight in alkaline medium
C
It is equal to its molecular weight in acidic medium
D
It is one third of its molecular weight in acidic medium
Solution:
It is one-third of its molecular weight in alkaline medium because it gives 3 nascent oxygen in alkaline medium
2
K
M
n
O
4
+
H
2
O
+
3
e
−
2
K
O
H
+
2
M
n
O
2
+
3
[
O
]
∴
Equivalent weight
=
3
M