Most copper salts/ppts are blue, some light blue and others dark blue. Most Ca salts/ppts are white. You need to go through the combinations yourself. We'll be happy to check your work. Go to google and type in the suspected ppt. You can find solubility and color there. Here is a site that is a good starting point for solubility.
http://www.chem.vt.edu/RVGS/ACT/notes/solubility_rules.html
What precipitates form when
Cu(NO3)2, CuSO4, NH4OH, and CaCl2
only two of the above added together. I need all combinations. What color are they? Ik Cu reacts with NH4OH. is the precipitate white?? what about the others?
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