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| 1. |
What is efflorescence? Name two efflorescent substance |
| Answer» Efflorescence\xa0is 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.\xa0Example\xa0is Gypsum (CaSO4.\xa0Efflorescence\xa0is a deposit of salts, usually white, formed on a surface, the\xa0substance\xa0having emerged in solution from within either concrete or masonry and subsequently precipitated by evaporation. | |