Copper chloride and salt are mixed together. How would you separate these two substances using methanol? (Copper dissolves in methanol).
I makes no sense to say copper dissolves in methanol. Perhaps you mean copper (II) chloride dissolves in methanol. For that matter, so does NaCl. If CuCl2 is substantially more soluble in methanol, then you could dissolve it in CH3OH, but some of the NaCl will also dissolve, so it won't be a very effective separation. Is the mixture of CuCl2 and NaCl a solid state mixture, or a mixture of two solutions? If it is the latter, then what you're really asking is how to separate Na+ from Cu2+. The simplest way would be to precipitate Cu as an insoluble compound. You can do this by adding a source of OH-, and then converting the Cu(OH)2 to CuO by heating it. The CuO will settle out more easily than Cu(OH)2. Filter the solution to separate the solid CuO. You could electrolyze a solution of NaCl and CuCl2. The Cu will plate out and also produced dangerous Cl2 gas. Be careful with that possibility.
if copper dissolves in methanol then u use filter paper to get rid of the copp chloride and ur left with salt
Pour the mixture into methanol and stir until the copper chloride has dissolved, possibly with gentle warming. Filter off the solution and recrystallize to recover the copper salt salt.
What i would suggest to you is this, create sort of a flow chart, and then look for what is unique to each chemical, Couple of things, Lead Chloride PbCl is a salt, and exists in a solution as two ions, hence it might help to play around with the boiling point. A thing you could try is the boiling point, if your mixture is a liquid, check and see the boilling points of each and then boil your solution and seperate using I believe a Hickman still. However, this will only work if there is a major difference in the boiling point of the solution. If mixture is a solid, than dissolve it in a inert liquid solvent. A final thing, try and google some Ochem Lab books and go to google books and use the ones with preview to get a better idea of seperation/purification techniques.
Fractional Distillation would be the preferred method, but filtration would also work, just not quite as well.
