Question

what is meant by efflorescence

Answer 1

In chemistry, efflorescence (which means "to flower out" in French) is the migration of a salt to the surface of a porous material, where it forms a coating. The essential process involves the dissolving of an internally held salt in water, or occasionally in another solvent.

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Answer 2

Hi friend,

Here's your answer,

Efflorescence is the migration of a salt to the surface of a porous material, where it forms a coating.
The essential process involves the dissolving of an internally held salt in water, or occasionally in another solvent. The water, with the salt now held in solution, migrates to the surface, then evaporates, leaving a coating of the salt.

Efflorescences can occur in natural and built environments. On porous construction materials it may present a cosmetic outer problem only, but can sometimes indicate internal structural weakness.

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