An insoluble salt can be obtained from another insoluble salt by double decomposition.

True

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False

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Solution

The correct option is A
True

An insoluble salt can also be obtained from another insoluble salt by double decomposition.Insoluble salt is first to be converted into a soluble salt, which can then be used for preparing the desired salt.Insoluble lead sulphate is prepared from insoluble lead carbonate by first converting lead carbonate into soluble lead nitrate with the help of dilute nitric acid.

$P b C O_{3} + 2 H N O_{3} \to P b (N O_{3})_{2} + H_{2} O + C O_{2}$

The resulting solution is then treated with sulphuric acid and a white precipitate of lead sulphate is obtained.

$P b (N O_{3})_{2} + H_{2} S O_{4} \to P b S O_{4} + 2 H N O_{3}$

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Similar questions

Salts are prepared by the following methods

(a) Direct combination

(b) Displacement

(d) Neutralisation of insoluble base

(e) Neutralisation of an alkali (titration)

Write the balanced equations for the preparation of the following salts in the laboratory :

(a) A soluble sulphate by the action of an acid on an insoluble base,

(b) An insoluble salt by the action of an acid on another salt,

(d) A soluble sulphate by the action of an acid on a metal.

Name :

(a) a chloride which is insoluble in cold water but dissolves in hot water,

(b) a chloride which is insoluble,

(d) a basic salt,

(e) an acidic salt,

(f) a mixed salt,

(g) a complex salt,

(h) a double salt,

(i) a salt whose solubility increases with temperature,

(j) a salt whose solubility decreases with temperature.

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