Page 60 - Chemistry - XII
P. 60
Strength of pureKMnO 17 ××158
% purity = 4 ×100 = −1 ×100
Strength of impureKMnO 98y ×'X'gL
4
COO
+
2+
5| +2MnO+16H 10CO+ 2Mn+8H O
4
2
2
COO
Oxidation
COOH
Or 2KMnO+ 5| +3HSO K SO +2MnSO +10CO+88H O
4 2 4 2 4 4 2 2
COOH
Oxalic acid
− COO
MnO |
4
COO
