Question

Why nacl turns moist during rainy season

Answer 1

Magnesium chloride is the common impurity present in table salt. It is highly hygroscopic and absorbs moisture from air. Because of the presence of MgCl2 in sodium chloride(common/table salt), the latter becomes wet. This type of wetting is generally observed in the samples of table salt obtained from sea water directly, because magnesium chloride also occurs in sea water.

Answer 2

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It absorbs both liquid water and water vapor present in air. Common salt absorbs moisture because they have impurities such as calcium chloride which are hygroscopic in nature. ... It absorbs moisture from the atmosphere which has high humidity in the rainy season.