How can you seperate sugar and salt?

Answer 1

Just to make this simple. Keep adding COLD water to the mixture and decant the water after a few minutes. Repeat until the water no longer tastes salty. The pour everything in the pot through a paper towel. Let the towel dry and the sugar will be left. Boil off the decanted water and you have salt.

Answer 2

You can do it one crystal or grain at a time. Salt is cubic whereas sugar is rectangular.

If this is a science class question, here are two science class answers.

By Extraction:
Dissolve the salt/sugar mixture in warm ethanol. The sugar is very soluble in warm ethanol whereas salt is only slightly soluble. Decant the ethanol into a separate dish. Dry the sugar by evaporating the ethanol. This sugar will still contain a little bit of salt. The remaining salt should be somewhat pure.

By Crystal Growth:
This is a blast! Dissolve the mixture in hot water to make a saturated solution. Fix a sugar crystal to a thread. Fix a salt crystal to another thread. Hang both into the saturated solution. As the solution evaporates, each sugar and salt crystal grows. Each is quite pure.

Answer 3

1. 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.

2. 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.

Answer 4

This from a site; I have no idea if this is true or not:

Do you need to be able to use them afterward? If not, use petroleum spirit/paraffin. Sugar will dissolve in it, salt will not.

Or heat up a pan really hot. Put the mixture in. The sugar will burn. You'll wind up with soot and salt. Add water, the salt will dissolve. Filter off the soot.

Answer 5

1) taste them 2) sugar is a bit more sparkly then salt

Answer 6

Not sure, but I suspect you can dissolve them in hot water.
Slowly cool the solution and one will precipite out first.
Just a guess though, I suspect that if you read one chapter up or back in your text book, they tell you what you need.

Answer 7

dissolve the two in the alcohol. the one left will be alcohol and sugar. sugar don't dissolve in alcohol..

Answer 8

sugar has a bery low melting point, I think that that could be used

Answer 9

I think you can do crystallization which is a method of purification.