Based on the Group III cation analysis, make a flow chart or schematic diagram to illustrate the separation process of Group III cations.
The seven cations of Group III are Mn+2, Fe+3, Co+2, Ni+2, Zn+2, Mn+2, Al+3 and Cr+3. They are precipitated as sulfides in ammoniacal solution buffered with ammonium chloride.
The group is divided into subgroups by the action of a strong base upon a solution of the cations. Chromium, zinc and aluminum hydroxides dissolve in excess potassium hydroxide solution to form a soluble group, whereas manganese, iron, nickel and cobalt hydroxides precipitate to form an insoluble group.
TEST SOLUTION
Aluminum nitrate
Manganese (III) nitrate
Iron (III) nitrate
Cobalt (II) nitrate
TEST REAGENTS
conc. NH3 Na3BiO3 (solid)
conc. HNO3 alc. NH4CNS
3M HC2H3O2 sat. NH4Cl
3M NH3 NaF (solid)
3M HCl sat. NH4C2H3O2
3M KOH H2O2
3M NH4CNS thioacetamide
alizarin
Based on the Group III cation analysis, make a flow chart or schematic diagram to illustrate the separation process of Group III cations.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 2 images
