When copper dissolves in an aqueous solution of ammonia containing some dissolved oxygen, does the copper(I) ammine complex or the copper(II) ammine
complex form?#maverick# - 11-6-2011 at 08:37
Copper (II) tetramine complex I believe if u add NH3 to any copper (II) solutionblogfast25 - 11-6-2011 at 12:59
Elemental copper isn't appreciably attacked by ammonia solutions. But both Cu<sup>2+</sup> and Cu<sup>+</sup> ions form
diammonia complexes. Water insoluble white CuCl dissolves in ammonia solutions...LanthanumK - 11-6-2011 at 15:11
I am trying to use ammonia to prove whether a red precipitate is Cu2O or Cu; if that helps.AJKOER - 11-6-2011 at 16:05
You could try dissolving in HClO.
If Copper, then Copper Oxygen Chloride is formed (a double salt). Formula CuCl2.Cu(OH)2
If CuO, the same double salt plus oxygen bubbles.LanthanumK - 11-6-2011 at 18:01
Cu2O, not CuO. Which one did you mean?AJKOER - 12-6-2011 at 12:27
OK,
2 HClO + 2 Cu --> CuCl2.Cu(OH)2
which is Copper (II) Oxygen Chloride, which forms green crystalline needles.
Or,
4 HClO + 2 Cu2O --> 2 CuCl2.Cu(OH)2 + O2 (g)
Hopefully the reaction will be fast enough for you to see the tiny bubbles. Or, perform the reaction in a plastic bottle, which you have indented to
allow for a pressure expansion. You could also use a match to visually confirm oxygen.blogfast25 - 12-6-2011 at 13:38
