Chemistry colours

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Last updated: January 6, 2017

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Hint	Answer
[Fe(H2O)6]2+(aq)	Green solution
[Cu(H2O)6]2+(aq)	Blue Solution
[Fe(H2O)6]3+(aq)	Purple/yellow/brown solution
[Al(H2O)6]3+(aq)	Colourless solution
When an excess of ammonia is added to [Cu(H2O)6]2+(aq) what colour is the solution formed	Deep blue
Colour of [CuCl4]2–(aq) formed when HCl is added to [Cu(H2O)6]2+(aq)	Yellow solution
Colour of Vanadium's different oxidation states, in the order V, VI, III, II	Yellow, Blue, Green, Purple
Colour change [Co(H2O)6]2+(aq) + 2NH3(aq) ▬►Co(H2O)4(OH)2(s)+2NH4+(aq)	Pink to Blue

Hint	Answer
Al(H2O)3(OH)3(s)	White precipitate
Fe(H2O)3(OH)3(s)	Brown precipitate
Flame test colour of calcium ions Ca2+	Brick red
Flame test colour of Barium ions, Ba2+	Green
AgCl	White
Colour litmus paper becomes whn dipped in OH-	Blue
Colour of iodine crystals	Grey

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