Lakhmir Singh Solutions Class 10 Chemistry Solutions for Exercise in Chapter 2 - Chapter 2 Acids, Bases and Salts

Question 2 Exercise

(a)Why do acids not show acidic behaviour in the absence of water?

(b)Why does an aqueous solution of an acid conduct electricity?

(c)Why does distilled water not conduct electricity whereas rain water does?


(a) Mainly the acid behaviour of acid is due to the presence of hydrogen ions when it dissolves in water. Acids do not show an acidic character in the absence of water because the dissociation of hydrogen ions from an acid occurs in the presence of water only.

(b) The aqueous solution of an acid conducts electricity due to the presence of charged particles. The charged particles are ions here- Hydrogen and hydronium ions. They carry electric currents and thus acids conduct electricity.

(c) Distilled water does not conduct electricity because distilled water is the purest water that is free from all the ionic species. On the other hand, rainwater is not the pure form of water that is it contains impurities and therefore conducts electricity.

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