How to separate NaCl to original components?

Question

need asap

Answer 1

You can do electrolysis where Na+ ions go to the anode and pick up an electron but the newly formed Na reacts with water. The Cl- ions go to the cathode and loose an electron to form Cl2 gas.

Answer 2

By the electrolysis of molten salt. (At about 500°C).

The Ionisation of the Sodium and Chlorine atoms will cause the Na(+) ions (Cations), to go to the Cathode as molten Sodium (Na) and the Cl(-) ions (Anions), will be evolved at the Anode where they will form diatomic molecules of Chlorine gas (Cl2).

Answer 3

The answer is of course electrolysis of the molten salt (NOT an aqueous solution)

Electrolysis is a process by which electrons are forced through a chemical cell, thus causing a chemical reaction. The positive charge usually attracts electrons, and the electrode providing electrons is called cathode, because reduction takes place on it.

Reduction always takes place at the cathode, by definition. In the electrolysis of molten salt, NaCl, the cathode and anode reactions are:

Cathode (reduction): Na+ + e- = Na

  Anode (oxidation): 2 Cl- = Cl2 + 2 e-

or

Anode oxidation DE Cathod reduction

2 Cl- = Cl2 + 2 e- e- pump 2 Na+ + 2 e- = 2 Na

2 Cl- + 2 Na+ = Cl2 + 2 Na

If one mole of electrons (96485 C or 1 Faraday) passes from the anode to the cathode, one mole of Na (23 g) will be deposited, and half a mole of chlorine gas Cl2 (or one mole of Cl atoms) will be collected from the reaction at the anode.

In the above setup, if the current is 1.0 A, the rate at which Na deposits at the cathode will be 1.0E-5 (= 1/96485) mol (or 0.24 mg) per second. Of course, it takes 96485 seconds (or 26.8 hrs) to deposit one mole (23 g) of sodium metal.

The above is from:http://www.science.uwaterloo.ca/~cchieh/...

For a brief description, see: http://www.webelements.com/nexus/node/12...

For a patent, see: http://www.freepatentsonline.com/4187155...

Answer 4

boiling point?

Answer 5

I agree with the fact that you need to use electrolysis of the molten solution.

but also producing a molten could cause some separation due to differences in boiling point.