What are the types of salt?

What are the types of salt?

Aug 26, 2022, 16:45 IST

Simple salt:

Salt formed by neutralization of an acid and a base is called simple salt. These are of following types.

(i) Normal salts: Salts which do not contain any replaceable H ⁺ or OH ^– ions are called normal salts, e.g. NaCl, KNO ₃ etc.

(ii) Acidic salts: Salts formed by incomplete neutralization of polybasic acids and containing replaceable H ⁺ ions called acidic salt, e.g. KHSO ₄ , NaH ₂ PO ₄ etc.

(iii) Basic salts: Salts formed by incomplete neutralisation of polyacidic bases and containing replaceable OH ^– ions are called basic salts, e.g. Zn(OH)Cl, Mg(OH)Cl etc.

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(iv) Double salts: The compounds formed by combination of two simple salts are called double salts, e.g. Mohr’s salt (FeSO ₄ .(NH ₄ ) ₂ SO ₄ . 6H ₂ O), potash alum (K ₂ SO ₄ . Al ₂ (SO ₄ ) ₃ .24H ₂ O) etc.

Mixed salts: The salt which furnishes more than one cation or anion in solution is called mixed salt, e.g. Ca(OCl)Cl, KNaSO ₄ etc.

Ionic product of water: It is defined as the product of molar concentrations of H ₃ O ⁺ and OH ^– ions, i.e. K _w = [H ₃ O ⁺ ] [OH ^– ]. Its value is 10 ^–14 at 25 ^o C and increases with increase of temperature as dissociation of H ₂ O increases.

What are the types of salt? pdf