How would you use evaporation in obtaining salt from sea water ?

Dear parent!

 

Evaporation is the process by which a substance present in liquid state is converted to its gaseous state by forming vapours.

Now, sea water contains dissolved salt in it. During evaporation, only the lighter liquid component (i.e., water) evaporates, leaving behind the soluble solid component (i.e., salt).

 

For large scale industrial production of common salt, seawater is collected in shallow pits. The water from these pits evaporates slowly due to the heat of the sun, leaving behind the solid salt. The common salt obtained in this manner is then purified and packed.

 

So, in this way, the process of evaporation is used for obtaining common salt from sea water.

 

Best wishes!

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