Chemical: Very interested in the solution, please answer?

Question

If 1 kg of salt & 1kg of sugar were mixed , so what is exactly the best way to separate or isolate them?

Answer 1

There are a lot of ways to do this separation. Why not try a selective
precipitation. I am not sure the specific one I will suggest will work, but it
will give you an idea of how to approach the problem.

1. Evaporate as much of the water as you can without precipitating one or
the other compounds.

2. Slowly add a volatile organic solvent. A reasonable one might be acetone,
but ethyl alcohol, or isopropanol may also do. The salt should be much less
soluble than the sugar in the blended solvent mixture and you may see
"clouds" of salt form as you approach the solubility of salt in the mixed
solvent.

3. Filter the precipitate.

You may have to repeat steps 1.-3. again. I just do not know the solubility of
NaCl in these mixed solvents.

Give it a try. I will try to think of some other approach because these
"simple" separations are good training in chemical lab techniques.

Answer 2

you could add some other salt that would crash out either the sodium or the chloride, then another one that would crash out the opposite ion. Just pick a combination that will precipitate in water. I'll let you do the rest of the research on your own, its good for you!
Or, you could evaporate the water, add some organic solvent that will dissolve the sugar (the salt won't dissolve), filter off the salt, then evaporate the organic solvent to get the sugar back. This one is probably better. Try EtOAC or THF? I haven't done any sugar chemistry so I don't now what the best solvent would be. Look up sugar in the Merck index

Answer 3

Salt and sugar in water can never be split again. At least not in pure form.
Na, Cl, C12H22O11 in aqua.
Hmm

Answer 4

add water and extract the aqueous layer with ethyl acetate several times. combine organic layer(ethyl acetate layer) and evaporate solvent to get sugar. evaporate the water layer to get your salt.

why this works: sugar is somewhat soluble in water and fairly soluble in ethyl acetate, but sugar is much less soluble in salt water, being organic.
so, once you have sugar in salt water mixture and then multiple-extract it with ethyl acetate, you'll eventually get all the sugar into your combined organic layer, while the salt stays in the aqueous layer.

Answer 5

If you put in 150 mL of sulfuric acid, you could get the salt out... haha.

Answer 6

laymans guess -- heat it up.. the sugar will melt at a much lower temperature than the salt.

Answer 7

Get a thousand ants. That ought to do it.