CBSE Class 10 Answered

There are 6 types of salts:

1)    Normal salts: The salts formed by the complete replacement of the replaceable hydrogen ion of an acid molecule by a basic radical.

Examples: Sodium sulphate and sodium chloride

              2NaOH + H₂SO₄ → Na₂SO₄ + 2H₂SO₄

                     HCl + NaOH →  NaCl + H₂O

2)    Acid salts: The salts formed by partial replacement of the replaceable hydrogen ion of an acid molecule by a basic radical.

Example: Sodium bisulphate

NaOH + H₂SO₄ →  NaHSO₄ + H₂O

3)    Basic salts: The salts formed by the partial replacement of the hydroxyl group of a di- or tri-acidic base by an acidic radical.

Example:

Mg (OH) ₂ + HCl → Mg(OH)Cl + H₂O

4)    Double salts: The salts formed by the union of two simple salts that dissolve in water and crystallise.

Example:

Potash alum: K₂SO₄. Al₂ (SO₄)₃. 24H₂O

5)    Mixed salts: Mixed salts are those salts that contain more than one basic or acidic radical.

Example:

Sodium potassium carbonate NaKCO₃

6)    Complex salts: Complex salts are those salts which on dissociation give one simple ion and one complex ion.

Example:

Na [Ag (CN) ₂]    Na⁺ + [Ag (CN)₂]⁻

All the salts have various uses in daily life and industries.