Write the occurrence, preparation, properties and uses of NaCl.
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Explanation:
Occurrence of NaCl-
It is known as sodium chloride and it is found in the sea water mainly and is also found in some salt lakes.
Preparation of NaCl-
=> Sea water NaCl ===> Crude NaCl
(On Evaporating by solar heat)
=> Then impurities may be removed by filtration.
=> It contains Na2So4, MgCl2, CaCl2 etc. as their impurities.
Properties of NaCl-
=> It is slightly hydroscopic.
=> It's melting point is 1081 K.
Uses of NaCl-
=> In preservation like for pickles.
=> For preserving meat and fish.
=> In homes used as common salt.
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