What do you observe when

(a) an acid is added to a basic solution.

(b) ammonium chloride is dissolved in water.

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Solution

(a) A chemical reaction in which a base or an alkali reacts with an acid to produce a salt and water.
Acid + Base → Salt + Water
(b) Dissolution of ammonium chloride in water is an endothemic reaction in which heat energy is
absorbed.

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