Q. 11

State the number

Answer :

• Washing soda crystals contain 10 molecules of water (Na2CO3.10H2O).

• Plaster of Paris crystals contain 1/2 molecule of water (CaSO4.1/2H2O or 2CaSO4.H2O).


The water molecules, which form part of the structure of a crystal, are called water of crystallization.


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