3-ish. III guruh kationlarini reaksiyalari va aralashmasini analizini bajarish

Amal	Reagent
Ionlar
Fe^2+ni topish	K3[Fe(CN)6]	Fe3[Fe(CN)6]3, ko'k cho'kma
Fe^3+ni topish	K4[Fe(CN)6]	Fe4[Fe(CN)6]3, ko'k cho'kma
Gidroksidlar va sulfidlarni cho'ktirish	(NH,)2S+ NH4C1+NH3	1-cho'kma A1(OH)3, Cr(OH)3, ZnS, FeS, Fe2S3, MnS, CoS, NiS
CoS, NiS ni ajratish	HC1, 1 N	CoS, Ni	А1^3+, Cr^3+, Zn^2+, Fe^2+, Fe^3+, Mn^2+
CoS, NiS ni eritish	CH3COOH+H2O,	Co^2+, Ni^2+
Сг^3+, Fe^2+, Fe^3+, Mn^2+ ajratish	NaOH, mo'l, t=100°C	Cr(OH)3, Fe(OH)2, A1O2^- ZnO2^2-Fe(OH)3, Mn(OH)2
Сг^3+ ni ajratish va toppish	H2O2	CrO4^2Sariq eritma			Fe(OH)3, Mn(OH)4
Fe(OH)3, Mn(OH)4 eritish	HNO,+H2O2	Fe^2+ Mn^2+
Mn^2+ ni topish	PbO2+HNO3	HMnO4, binafsha eritma
Al(OH)3, ni ajratish Zn^2+ ni topish	NH4C1 H,S	A1(OH)3, oq cho'kma		[Zn(NH3)6]^2- ZnS, oq cho'kma
Al(OH)3, ni eritish va Al^3+ni toppish	CH3COOH,	Аl^3+
	Na2HPO4	A1PO4, oq cho'kma