Question

Give reason why ferrous sulphate is not used in titration in place of ferrous ammonium sulphate

Answer 1

During titration of KMnO4KMnOX4, we use Mohr's salt instead of ferrous sulphate salt to prepare the standard salt solution. Is it done to prevent oxidation of Fe2+FeX2+ to Fe3+FeX3+ before the titration itself? But to prevent that sulphuric acid is used. So why we do not use ferrous sulphate salt instead?


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