A dilute ferric salt resolution was step by step additional to the beaker containing acidified salt resolution. the sunshine purple color of the answer fades and at last disappears. that of the subsequent is that the correct rationalization for the observation?
1
KMnO4 is an oxidising agent, it oxidises FeSO4.
2
FeSO4 acts as an oxidising agent and oxidised KMNO4.
3
The colour disappears due to dilution; no reaction is involved.
4
KMnO4 is an unstable compound and decomposers in presence of FeSO4. to a colourless compound.