Transition Metal Colours
Reaction: Ti⁺² --> Ti⁺⁵
What colour is Ti⁺³?
Purple
Reaction: V⁺² --> V⁺⁵
Respectively, what colours are V⁺², V⁺³, V⁺⁴ and V⁺⁵?
Purple, green, blue, yellow
Reaction: Cr⁺² --> Cr⁺⁶
Respectively, what colours are Cr⁺², Cr⁺³ and Cr⁺⁶?
Blue, green, orange
Reaction: Mn⁺² -->Mn⁺⁷
Respectively, what colours are Mn⁺², Mn⁺⁴, Mn⁺⁶ and Mn⁺⁷?
Pink, red, green, purple
Reaction: Fe⁺² --> Fe⁺⁶
What colours are Fe⁺² and Fe⁺³?
Pale green, pale yellow
Reaction: Co⁺² --> Co⁺⁵
What colours are Co⁺² and Co⁺³?
Bright pink, green
Reaction: Ni⁺² --> Ni⁺⁴
What colour is Ni⁺²?
Green
Reaction: Cu⁺¹ --> Cu⁺³
What colour is Cu⁺²?
Blue
What colour is potassium dichromate (VI) in solution?
Orange
What colour is cobalt (II) chloride in solution?
Pink/purple
What colour is nickel (II) sulfate in solution?
Green
What colour is hydrated copper (II) sulfate in solution?
Blue
What colour is [Cu(H2O)6]^2+?
Pale blue
What colour is Cu(OH)2?
Pale blue ppt
What colour is [Cu(NH3)4(H2O)2]^2+?
Dark blue
What colour is CuCl4^2-
Yellow
What colour is CuI?
White ppt
What colour is CoCl4^2-?
Blue
What colour is [Cr(H2O)6]^3+?
Pale purple
What colour is Cr(OH)3?
Dark green ppt
What colour is [Cr(NH3)6]3+?
Purple
What colour is [Cr(OH)6]3-?
Dark green
What colour is CrO4^2-?
Yellow
What colour is [Mn(H2O)6]2+?
Pale pink
What colour is Mn(OH)2
Pale brown ppt
What colour is [Fe(H2O)6]2+?
Pale green
What colour is Fe(OH)2?
Dark green ppt
What colour is [Fe(H2O)6]3+?
Yellow
What colour is Fe(OH)3?
Orange-brown ppt