100 points
what is efforescence? name the compound which show efflorescence. support your answer .

Question: What is efforescence? Name the compound which show efflorescence.

It is the process of the loss of molecules of water of crystallization from a substance when exposed to air. Washing soda shows efflorescence. It losses nine molecules of water of crystallization to give sodium monohydrate which is a white powder called washing soda.