1.

Give use of common ion effect in quantitative analysis.

Answer»

Solution :The SALT which has less solubility PRODUCT for its precipitation common ion effect is used.
e.g. (i)`Ag^+` ion in AgCl
(II)`FE^(3+)` ion convert into `[Fe(OH)_3]`
(iii)`Fe^(3+)` ion in Ferric oxide
(iv)`Ba^(+2)` ion precipitates as `BaSO_4`


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