Salts are compounds formed by the combination of an acid and a __________.

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Solution

Salts are compounds formed by the combination of an acid and a base, in which the metal ion of the base replaces the hydrogen ion of the acid.
Salt is a general name given to many compounds that are products of neutralization reactions between acids and bases.
Example -
$\underset{Sodium hydroxide}{NaOH (aq)} + \underset{dil . Hydrochloric acid}{HCl (aq)} \to \underset{Sodium chloride}{NaCl (aq)} + \underset{Water}{H_{2} O}$
Thus, salts are compounds formed by the combination of an acid and a base.

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Question 2

Products of a neutralization reaction are always
(a) an acid and a base.
(b) an acid and a salt.
(c) a salt and water.
(d) a salt and a base.

(a) $C a (H_{2} P O_{4})_{2}$ is an example of a compound called __________________ (acid salt / basic salt / normal salt).

(b) Write the balanced equation for the reaction of : A named acid and a named alkali.

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.

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