Ligand Substitutions and Colours Flashcards
What colour is Copper(II) hexaaqua, [Cu(H2O)6]2+?
Blue
What colour does Copper(II) hexaaqua go when you add concentrated HCl?
YELLOW
[Cu(H2O)6]2+ (aq) + 4Cl-(aq) ⇔ [CuCl4]2-(aq) + 6H2O(l)
Goes from BLUE to YELLOW!!!
What colour does Copper(II) hexaaqua go when you add concentrated ammonia?
[Cu(H2O)6]2+(aq) + 4NH3(aq) ⇔
[Cu(H2O)2(NH3)4]2+(aq) + 4H2O(l)
Goes from BLUE to DEEP BLUE!!!
What colour is [Co(H2O)6]2+?
PINK!!
What colour does [Co(H2O)6]2+ go when you add concentrated Cl-?
[Co(H2O)6]2+ + 4Cl- ⇔ [CoCl4]2- + 6H2O
Goes from PINK to BLUE!!!
What colour does [Co(H2O)6]2+ go when you add concentrated Cl-?
[Co(H2O)6]2+ + 4Cl- ⇔ [CoCl4]2- + 6H2O
Goes from PINK to BLUE!!!
What colour does [Co(H2O)6]2+ go when you add 6NH3?
[Co(H2O)6]2+ + 6NH3 ⇔ [Co(NH3)6]2+ + 6H2O
Goes from PINK to PALE BROWN
