this is an chemistry proyect "how to obtain pure water from sodium chloride solution"?

Question

This is the questions : 1) the water that drips into the test tube is pure water , how can you describe away from testing it ?
2) what is left in the boiling tube at the end of the experiment ?
3) This is the process that is called distillation ?

Answer 1

The process of obtaining pure water from aqueous solution of NaCl is indeed distillation. The solution is boiled, the vapour is cooled and the droplets of H2O is collected.
1)To test if the liquid is water, use anhydrous copper sulphate - water will convert it from white to blue.
2)The residue that is left in the tube is NaCl, usually in the form of small crystals.
3)Yes it is.

Answer 2

a) the test for water is the use cobalt (II) chloride paper as this will turn from blue to pink in the presence of water. You could also measure the boiling point of water, as any increase in boiling temperature will inform that impurities are in it.
b) What is left in the boiling tube is a residue of sodium chloride solid.
c) This process is known as distillation as the water is evaporated (from the salt) and condensed at with cooled water. The process of evaporation and condensation is known as distillation.

Answer 3

it fairly is been a quick on an identical time as on account that i've got taken chemistry, yet i'm going to attempt that might actually assist you out. To seperate the sodium chloride (NaCl, table salt) from water (H20), boil the water at 212 tiers Farenheit or a hundred tiers Celsius until all the water has evaporated. as quickly as that's accomplished the only ingredient which may be left is the forged sodium chloride. The NaCl shouldn't evaporate using fact it fairly is BP, boiling factor, is bigger than that of water.

Answer 4

Distillation of the solution.
The clean water evaporates and condenses in a next vessel.
The NaCl (salt) remains behind.

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