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Be a, D act $ ie, Detection of basic radical: <, Analysis of zero group cation NH,“(ammonium ion) =, Test — Observation ee Inference, |. Action with NaOH: | Colourless gas with ammonia |, Salt + dil NaOH solution. Heat smell which gives dense white | Zero group, , fumes with lid of Conc. HCl NH¢ is present., , reagent bottle., , No characteristic gas liberation. _| NH.’ is absent, , , , eparation of Salt solution or Original solution (0.5) = _ ee ae, Salt solution should be prepared in water if it is soluble in water., \f salt solution is insoluble in water then it is prepared in dil HCL, , , , Detection of the group of basic radicals:, , , , , , , , , , , , , , , YOS+ dil HCl No precipitate =, YOS+dilHCl+H:S solution _| No precipitate Igroup Cd’, Bi and Cu, , se Hes | absent. =|, 3) 0.5 + solid NH.Cl+ excess NH,OH | Gelatinous white precipitate | Ill'group (AU) is present, , , , z eee [No precipitate, A 0.S + solid NH.Cl + excess of White precipitate, NH.OH + HS solution. |, , | group (Al*) is absent, \V group (Zn®) may be present., , , , , , , , ¥ 4 ___| No precipitate IV group Zn, | 5) 0.S + solid NH.Cl + excess of A white araipiiate isformed. | V group Ba’, NH.OH + (NH,)2COs solution present., | No precipitate | ~ V group Ba®, Ca® or Sr are, absent, , , , Since NH.’ and group I-V groups are absent, the radical belongs to VI group, , lest for VI group basic radicals:, , , , 7. OS + solid NH.Cl+ excess of |, , NH,OH + 3 drops of Na:HPO; | White precipitate is formed | VI group Mg*is present and, (Disodium hydrogen phosphate) confirmed, | solution., , , , , , , , Once the group of the basic radical is identified, the radical present in the salt is confirmed by conducting, , the flowing tests., , Confirmatory test for ammonium radical, , Nessler’s reagent test: Zero group, 0.5 + Excess of Nessler's reagent ___| Abrown precipitate is formed _| NH«' is confirmed., , @O REDMI NOTE 9, CO al quap CAMERA
