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Sometimes no precipitate is obtained even if group V radicals are present why ? |
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Answer» Solution :No, precipitate is obtained when the solutio is dilute in dilute solution `(NH_(4))_(2)CO_(3)` hydrolyses to given carbonic acid which is a WEAK ELECTROLYTE. Its ionisation does not produce sufficient `CO_(3)^(2-)` ions concentration to precipitate Ca, Sr and Ba as carbonates `(NH_(4))_(2)CO_(3)+2H_(2)Oto2NH_(4)OH+H_(2)CO_(3)` |
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