Chemistry

State (i) the formation (ii) the components of – a basic salt.

State which of following salts is an – acid, normal or basic salt.

(i) bleaching powder

(ii) potassium mercuric iodide

(iii) sodium sulphite

(iv) sodium hydrogen sulphite

(v) sodium silver cyanide

(vi) basic lead nitrate

(vii) potassium zincate

(viii) alum

(ix) calcium bicarbonate

(x) basic copper chloride

(xi) trisodium phosphate.

Acids Bases Salts

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Answer

(i) Formation of a basic salt — A basic salt is formed by partial replacement of hydroxyl radicals of a diacidic or triacidic base with an acid radical.

(ii) Components of a basic salt — A basic salt contains a cation [metallic], a hydroxyl ion [of a base] and an anion [of an acid].

For example — Basic copper nitrate Cu[OH]NO3 , basic copper chloride Cu[OH]Cl

Acid, normal or basic salt —

(i) bleaching powder — Normal salt (Mixed salt)

(ii) potassium mercuric iodide — Normal salt (Complex salt)

(iii) sodium sulphite — Normal salt

(iv) sodium hydrogen sulphite — Acid salt

(v) sodium silver cyanide — Normal salt (Complex salt)

(vi) basic lead nitrate — Basic salt

(vii) potassium zincate — Normal salt

(viii) alum — Normal salt (Double salt)

(ix) calcium bicarbonate — Acid salt

(x) basic copper chloride — Basic salt

(xi) trisodium phosphate — Normal salt

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