What happens when crystals of washing soda are
left open in dry air? What is this change named as? Name two industries based on the use of washing soda.
Washing soda(Na2CO3.10H20) when is left open in the dry air, lose its water of crystallization.This change is named as efflorescence.
1. It is used in making of glass and soap.
2. It is used for removing permanent hardness of water.