I have a solution of Copper Acetate and I would like to […]
I have a solution of Copper Acetate and I would like to play around with the ligands to get different colors. The copper acetate was made through mixing vinegar (5% acetic acid), NaCl, and C(s). The deep blue-colored copper acetate spontaneously formed during a month in my dark storage room.
I neglected to mention that the experiment simultaneously produced a 0.5-inch deposit of what appears to be Copper Carbonate or Verdigris on the bottom of the 1 Liter beaker. Also, I have let the copper acetate solution evaporate for several years now. The former 1L is now 1/2 liter and has begun precipitating crystals (like the ones on the wiki page). Fun fact: During the Renaissance, glacial acetic acid was made by dry distilling metal acetates and primarily copper(II) acetate. That sounds like a cool project! Do you have enough solution for some trial and error? All manner of organic oxyanions binds to copper. You might try EDTA, which can be found in a number of beverages, although I don't know what effect that would have on color. Common off-the-shelf eye drops are one of the best sources of EDTA if I recall correctly. Citric acid might be worth a try, instead, though, since it's cheaper and will probably behave pretty similarly.
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