Question

how to obtain the pure sodium chloride from a crude sample

Answer 1

the most abundant source of the sodium chloride is sea water which contains 2.7 to 2.9 % by mass of the salt .
common salt is generally obtained by the evaporation of the sea water crude sodium chloride generally obtained by the crystallization of the brine solution which contains sodium sulphate calcium sulphate calcium chloride and magnesium chloride .
to obtain pure sodium chloride The Croods salt is dissolved in minimum amount of the water and filter to remove insoluble impurities the solution is then saturated with the HCL gas crystals of pure sodium chloride separated out calcium and magnesium chloride began more soluble than sodium chloride remaining the solution .


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# be brainly

Answer 2

Rock salt or halite is a mineral the contains sodium chloride (table salt) as well as other minerals and impurities. You can remove most of these contaminants using two simple purification techniques: filtration and evaporation