Question

Salts while crystallizing out from their aqueous solution, unite with a definite quantity of water which is known as __________________.

Answer 1

The water of crystallization:

• Some salts while crystallizing out from their aqueous solution, unite with a definite quantity of water which is known as the water of crystallization.
• The water of crystallization implies having a fixed number of molecules present in one formula of a unit of salt.
• Crystal salts with water of crystallization are called hydrates.
• The water crystals can be extracted by heating, but the crystal properties can be lost in this process.
• For example, ${\mathrm{CuSO}}_4.5{\mathrm{H}}_2\mathrm{O}$( copper sulfate pentahydrate or blue vitriol).

Therefore, salts while crystallizing out from their aqueous solution, unite with a definite quantity of water which is known as the water of crystallization.