How will you remove the excess of NH_(4)Cl before adding (NH_(4))_(2)C – InterviewSolution

1.	How will you remove the excess of NH_(4)Cl before adding (NH_(4))_(2)CO_(3) for the precipitation of group?
Answer» Solution :`NH_(4)Cl` is removed by treating the filtrate from group IV with Conc. `HNO_(3)` on HEATING to DRYNESS, ammonium chloride is decomposed according to the following equations: `NH_(4)Cl+HNO_(3)toNO_(4)NO_(3)+HCl` `NH_(4)NO_(3)toN_(2)O+2H_(2)O`

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