How do you obtain pure sodium chloride from a crude sample?
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By the process of fractional distillation or filtration, evaporation.
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HLO MATE HERE IS UR ANSWER.
⭐. Crude sodium chloride , contains sodiun sulphate , calcium sulphate, calcium chloride and magnesium chloride as impurities.
⭐. First the crude sodium chloride is dissolved in minimum amount of water and filtered to remove insoluble impurities.
⭐. Now hydrogen chloride gas is passed into the saturated solution of sodium chloride .
⭐. Then pure sodium chloride crystallises out.
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