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What is efflorescence? Name two efflorescent …

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What is efflorescence? Name two efflorescent substance

Posted by Jai Agrawal 5 years, 4 months ago

CBSE > Class 10 > Science

1 answers

Meghna Thapar 5 years, 4 months ago

Efflorescence is the loss of water (or a solvent) of crystallization from a hydrated or solvated salt to the atmosphere on exposure to air. ... The water, with the salt now held in solution, migrates to the surface, then evaporates, leaving a coating of the salt. Example is Gypsum (CaSO4. Efflorescence is a deposit of salts, usually white, formed on a surface, the substance having emerged in solution from within either concrete or masonry and subsequently precipitated by evaporation.

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