Question

What are hydrous substances? Explain with examples.

Answer 1

Substances which contain water molecules along with salts are hydrated or hydrous substances.

Examples,

1. Sodium carbonate decahydrate$\left(N{a}_{2}C{O}_3.10H_{2}O\right)$ here, sodium carbonate salt contains 10 water molecules.
2. Copper sulphate pentahydrate $(CuS{O}_4.5H_{2}O)$ here, copper sulphate contains 5 water molecules