explain why it is not possible to convert MnO4- from MnO2 by oxidation
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Answer:
3MO
4
2−
+2H
2
O→M
+2
n
2+
+M
+4
n
O
2
+4H
+
, It is a disproportionation reaction. In disproportionation reaction, equivalent weight of the species undergoing disproportionation =Eq. wt. (in oxidation) + Eq. wt. (in reduction)
M
+6
n
O
4
2−
→M
+4
n
O
2
Eq.wt.(redn.)=
2
mol.wt
,
M
+6
n
O
4
2−
→M
+7
n
O
4
−
Eq.wt.(oxidn.)=
1
mol.wt
,
Eq.wt.ofMnO
4
2−
=
2
M
+
1
M
=
2
3
M
Explanation:
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