Colours Flashcards
(27 cards)
[Fe(H2O)6]2+
Light green
[Fe(OH)2]
Dark Green precipitate
[Fe(H2O)6]3+
Yellow
[Fe(OH)3]
Dark brown/ Orange preciptate
[Cu(OH)2]
Pale blue preciptate
[Cu(H2O)6]2+
Pale blue
[Cu(H2O)2(NH3)4]2+
Dark blue
[Cu(Cl4)]2-
Yellow
[CoCl4]2-
Blue
CuI
White preciptate
[Cr(H2O)6]3+
Pale purple
[Cr(OH)3]
Dark green preciptate
[Cr(NH3)6]3+
Purple
[Cr(OH6)]3-
Dark green
[Cr2O7]2-
Orange
[CrO4]2-
Yellow
[Mn(H2O)6]2+
Pale pink
[Mn(OH)2]
Pale brown preciptate
2I-+Fe3+–>Fe2++I2
Orange brown (Fe3+)
Brown (I2)
Starch is used as an indicator
Excess Iodine - Blue black. Else, Colourless.
5MnO4-+8H++5Fe2+ –> 5Mn2++4H2O+5Fe3+
Purple (MnO4-)
Pale pink (Mn2+)
Titration is Purple / Pink to colourless when all manganate has reacted
AgCl
Chloride Test
White Preciptate
Soluble in Dilute NH3
AgBr
Chloride Test
Cream Preciptate
Soluble in Concentrated NH3
AgI
Chloride Test
Pale Yellow
Not soluble in NH3 at all
Cl2
Pale Green Gas
