Why is anhydrous CaCl2 used in a desiccator. Name one substance which is 'efflorescent'.
golt al which contains water of crystallization, bl which does not contain.
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Anhydrous Calcium chloride (CaCl₂) has a capacity of absorbing moisture as it is hygroscopic in nature, so it is used as a desiccators. An efflorescent substance is a chemical which has water associated with its molecules, and which, when exposed to air, loses this water through evaporation.
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