How are soluble salts prepared by direct combination?

By mixture of acid and bases

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By heating a metal with non-metal

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By neutralising a soluble acid with a soluble base (alkali)

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By mixing solutions of two soluble compounds

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Solution

The correct option is B By heating a metal with non-metal
A soluble salt is prepared by direction combination of a metal with a non-metal. For example, Iron(III) Chloride or $F e {C l}_{3}$ is a salt which is prepared by direction combination of iron and chlorine.

$2 F e (h e a t e d) + 3 {C l}_{2} (d r y) \to 2 F e {C l}_{3}$

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Similar questions

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.

B F_{3}

The following is a list of methods for the preparation of salts.

A - direct combination of two elements.

B - reaction of a dilute acid with a metal.

C - reaction of a dilute acid with an insoluble base.

D - titration of a dilute acid with a solution of soluble base.

E - reaction of two solutions of salts to form a precipitate.

Choose from the above list A to E, the best method of preparing the following salts by giving a suitable equation in each case :

1. Anhydrous ferric chloride, 2. Lead chloride,

3. Sodium sulphate, 4. Copper sulphate.

Soluble salts can be prepared by addition of acid to :

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