Question

the strategy used for purification of water for chemical purposes is:
A). fractionation
B). distillation
C). evaporation
D). none of the above

Answer 1

In certain areas of the globe that don't have access to water treatment plants, alternative methods of purification must be used. Those methods include boiling, granular activated-carbon filtering, distillation, reverse osmosis, and direct contact membrane distillation.

Complete step by step answer:
The method used for purification of water for chemical purposes is distillation. It involves selective boiling and condensation to get rid of the impurities. Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation.
Dry distillation is the heating of solid materials to provide gaseous products At the boiling point of a combination of liquids, all the volatile constituents boil. However, the number of a constituent within the resulting vapor is predicated on its contribution to the whole pressure of the mixture.
That is why the compounds with higher partial pressures are often concentrated within the vapors whereas the compounds having low partial pressures can be concentrated within the liquid.
Since a component within the mixture cannot have zero partial pressure, it's impossible to get a very pure sample of a component from a combination via distillation. However, samples of high purity are often obtained when one in all the components within the mixture features a partial pressure which is near zero.

So, the correct answer is Option B.

Note: Distillation plays a vital role in many water purification techniques. Many desalination plants incorporate this method so as to get drinkable from seawater. Distillation is additionally employed on an industrial scale to purify the liquid products obtained from chemical synthesis.