Chemistry
Why is anhydrous CaCl2 used in a desiccator. Name one substance which is 'efflorescent'.
Water
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Answer
Anhydrous CaCl2 is deliquescent in nature, absorbs moisture and hence used as drying agent or desiccating agent.
Washing soda [Na2CO3.10H2O] is efflorescent in nature.
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Related Questions
How does an increase in temperature affect :
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(ii) the solubility of CaSO4 in water ?Give reasons for the following :
(i) table salt becomes moist and sticky during the rainy season.
(ii) a white powder forms on the surface of washing soda crystals which are left exposed to the air.
Name a salt
(a) which contains water of crystallization
(b) which does not contain.
Name a deliquescent substance.