Qualitative Analysis 1 Flashcards
Hydrated salt of Mn
Light pink
Hydrated salt of Co (II)
Reddish pink
HgO, HgI2 , Pb3O4
Red
Sb2S3 , some dichromates and ferricyanides
Orange red
Fe2O3
Reddish brown
PbO2 , Bi2S3 , CdO, Ag2O, CuCrO4, SnS
Dark brown
MnO2
Black
Chromates, As2S3 ,As2S5 , AgBr, AgI, PbI2,Cds, SnS2 , a few iodides and ferrocyanides
Light Yellow
K2MnO4 , Ni salts, hydrated ferrous salts some Cu(II) compounds
Green
Salt of Cr (III)
Dark green
Hydrated CuSO4 , Anhydrous CoSO 4
Blue
Sulphides of Ag(I), Cu(I), Cu(II), Fe(II), Ni(II), Co(II), Hg(II) and Pb(II), MnO2 ,Fe3O4 , FeO, CuO, Co3O4 , Ni2O3
Black
Ferric salts
Light yellow or brown
Ferric salts
Light yellow or brown
Ni2+, Fe2+, Cr3+ and Cu2+
Green or blue
Co2+ and Mn2+
Pink
CrO, Fe3+, [Fe(CN)6]4-
Yellow
Dichromates
orange
permanganates
Purple
HgCl2 , NH4X, AlCl3 , HgCl2,As2O3 , Sb2O3
White
As2S3 and HgI2
turns red when rubbed with glass rod
Iodides
Blue black and violet vapours
Yellow (hot) and White (cold)
ZnO
Reddish Brown (hot); Yellow (cold)
PbO
Black (hot); Red (cold)
HgO, Pb3O4
Black (hot); Red Brown (cold)
Fe2O3
Charcoal cavity test with Cobalt Nitrate
Blue (Thenard’s blue)
Green (Rinmann’s green)
Pink
Blue (Thenard’s blue): Al3+
Green (Rinmann’s green): Zn3+
Pink: Mg2+