Question

what is water of crystallisation????? ans brief

Answer 1

Water of crystallization is the fixed amount of water, which is necessary for certain salts to crystallize out from their aqueous solutions. This water makes it possible for them to form crystals, and it is responsible for the shapes of their crystals. The crystals contain the salts and water combined in definite proportion, and when heated, the water is lost.

Examples of Crystal water :

Commercial root killer often contain Copper Sulfate Pentahydrate ($CuSo_{4} .5H_{2}O$) crystals. The five water molecules are called water of crystallization.