how much copper to add to vinegar and salt to make copper acetate?

Question

Hello- I am having difficulty making Cu2(OAc)4(H2O)2 ,
what percantage of copper should I use in relation to salt and vinegar?
Thanks,

thanks for the feedback- I am a poor student who cant afford much-is there no way of making this solution with just basic ingredients? I have tried passing a charge through the liquid but to no avail :(

Answer 1

Copper (II) Acetate has the chemical formula,
Cu(C2H3O2)2

If you really want to make Copper Acetate, adding Copper metal to vinegar is not the way to go about it, you will not get any significant reaction…look at Copper’s position on the reactivity series of metals.

A better method would be to react Copper (II) Carbonate (CuCO3) with acetic acid (vinegar, HC2H3O2) to produce Copper (II) Acetate, water, and Carbon Dioxide. This procedure is similar to reacting baking soda with vinegar.

Copper (II) Carbonate can be precipitated out of solution by adding a soluble Carbonate salt (like Sodium of Potassium Carbonate) to a soluble Cu+2 salt (like Copper Sulfate or Copper Chloride). The reaction will produce Copper Carbonate (solid) and another (soluble) salt.

Answer 2

I'm not sure what salt you are using but a common way to synthesize it in a laboratory is to react cooper sulfate with ammonia and acetic acid.

Here is the reaction:
CuSO4 + 4 NH3 + 4 CH3COOH → Cu2(OAc)4(H2O)2 + (NH4)2SO4

So you need to add 4 moles of ammonia and acetic acid for every 1 mole of copper sulfate

Answer 3

So ignoring the problem with adding copper, salt and vinegar together to get copper acetate.... You can work out the proportion of any chemical needed in a reaction by writing out the equation of the reacrion this then tells you how much of each you need. Generally though you use enough of one reagent to make the required amount of your substance (check how many moles of product make 1 mole of reactant and then work out the mass required in grams) and the other reagents are usually then added in excess.