I have a lab investigation due in a couple of days and I need some help. I've been asked to find a procedure to make Copper (II) acetate from 1g of pure copper fillings (formulas and everything). I have searched everywhere to no avail. Please help me?
not sure what you need but Cu+2CH3COO -- Cu(CH3COO)x2 if my math is right (which it rarely is) 1.8 grams of acetate is needed to react with the copper ? since it's a 1 to 2 reaction one mole of Cu needs 2 moles of acetate since you have roughly .015625 mol of Cu you would need .03125 mols of acetate, since acetate (C2H3O2 which is sometimes how it's written) is roughly 59 g per mol .03125x59 is 1.8 hope this helps
Copper metal is not reactive with acetic acid, but there is a a caveat. In the presence of an oxidizing agent such as atmospheric oxygen there is a radical reaction resulting in a formation of a copper oxide, copper ions and peroxoacetic acid which is unstable (and is a strong oxidizing agent) resulting in a solution of copper acetate. So to get copper acetate from copper it is best to use glacial acetic acid, fine copper turning water as solvent, and to bubble oxygen though the solution. As an alternative to bubbling oxygen you can just bubble air (which is about 20% oxygen), or you can use hydrogen peroxide as an oxidizing agent. Having said all that what I would actually do is a 2 step and not a 1 step process. Rather then wait days for the reaction described above to complete i'd react metallic copper with sulfuric acid in the presence of hydrogen peroxide to produce copper sulfate via a copper oxide in situ intermediate. This is a much faster reaction, then you can just react it with lead acetate in a substitution reaction, producing copper sulfate.
