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प्रश्न
How can this impurity be removed?
उत्तर
The impurity can be removed by passing a current of dry hydrogen chloride gas through a saturated solution of the affected salt. Pure sodium chloride is produced as a precipitate which can be recovered by filtering and washing first with a little water and finally with alcohol.
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संबंधित प्रश्न
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\[\ce{NaHSO4 <=> H+ + Na+ + SO^2-_4}\]
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A definte number of water molecules bound to some salts.
Give a suitable chemical term for:
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