In the disproportionation reaction,
3HClO3 → HClO4 + Cl2 + 2O2 + H2O
the equivalent mass of the oxidising agent is (molar mass of HClO3 = 84.45)
16.89
32.22
84.45
28.15
To an aqueous solution containing anions a few drops of acidified KMnO4 are added. Which one of the following anions, if present will not decolourise the KMnO4 solution ?
I-
CO
S2-
NO
In the following reaction,
Mx+ + MnO → MO + Mn2+ + O2
If one mole of MnO oxidises 2.5 moles of Mx+, then the value of x is
5
3
2
1
When MnO2 is fused with KOH, a coloured compound is formed. The product and its colour is
K2MnO4, purple green
KMnO4, purple
Mn2O3, brown
Mn2O4, black
A.
K2MnO4, purple green
The product is K2MnO4 and is of purple green colour.
2MnO2 + 4KOH + O2 → 2K2MnO4 + 2H2O