Statistics for Chemistry colours

Click here to take the quiz!

Hint	Answer	% Correct
[Cu(H2O)6]2+(aq)	Blue Solution	93%
[Fe(H2O)6]2+(aq)	Green solution	89%
[Fe(H2O)6]3+(aq)	Purple/yellow/brown solution	85%
Colour litmus paper becomes whn dipped in OH-	Blue	78%
Flame test colour of calcium ions Ca2+	Brick red	74%
Flame test colour of Barium ions, Ba2+	Green	67%
AgCl	White	59%
Fe(H2O)3(OH)3(s)	Brown precipitate	56%
Al(H2O)3(OH)3(s)	White precipitate	44%
[Al(H2O)6]3+(aq)	Colourless solution	41%
Colour of iodine crystals	Grey	41%
Colour of [CuCl4]2–(aq) formed when HCl is added to [Cu(H2O)6]2+(aq)	Yellow solution	37%
When an excess of ammonia is added to [Cu(H2O)6]2+(aq) what colour is the solution formed	Deep blue	33%
Colour of Vanadium's different oxidation states, in the order V, VI, III, II	Yellow, Blue, Green, Purple	15%
Colour change [Co(H2O)6]2+(aq) + 2NH3(aq) ▬►Co(H2O)4(OH)2(s)+2NH4+(aq)	Pink to Blue	11%