NCERT Solution for Class Tenth Science Chapter 2
Acids, Bases and Salts
Intext Questions
Page No-9
Questions No- 2
Why does an aqueous solution of an acid conduct electricity?
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Acids dissociate in aqueous solutions to form ions. These ions are responsible for conduction of electricity.
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In aqueous solutions acids dissociate to form ions. These ions conduct electricity. In dry condition acid does not dissociate to form ions.
An aqueous solution of an acid conducts electricity because acids ionize or dissociate in water, producing ions that are free to carry an electric current. Let’s take hydrochloric acid (HCl) as an example:
HCl → H⁺ + Cl−
In this reaction, hydrochloric acid (HCl) dissociates into hydrogen ions (H⁺) and chloride ions (Cl). The H⁺ ions, also known as protons, are responsible for the acidic properties of the solution. These ions are highly mobile in water, allowing them to carry an electric current.
The ability of a solution to conduct electricity depends on the concentration of ions in the solution. Strong acids, such as hydrochloric acid, dissociate almost completely in water, leading to a high concentration of ions and good conductivity. Weak acids, on the other hand, ionize only partially, resulting in a lower concentration of ions and lower conductivity.
In summary, the presence of free ions (H⁺ and anions) in the solution, due to the ionization of acids in water, allows the solution to conduct electricity. This behavior is characteristic of electrolyte solutions, where ions are mobile and can carry an electric current.
An aqueous solution of an acid conducts electricity because acids ionize or dissociate in water, producing ions that are free to carry an electric current. Let’s take hydrochloric acid (HCl) as an example:
HCl → H⁺ + Cl−
In this reaction, hydrochloric acid (HCl) dissociates into hydrogen ions (H⁺) and chloride ions (Cl). The H⁺ ions, also known as protons, are responsible for the acidic properties of the solution. These ions are highly mobile in water, allowing them to carry an electric current.
The ability of a solution to conduct electricity depends on the concentration of ions in the solution. Strong acids, such as hydrochloric acid, dissociate almost completely in water, leading to a high concentration of ions and good conductivity. Weak acids, on the other hand, ionize only partially, resulting in a lower concentration of ions and lower conductivity.
In summary, the presence of free ions (H⁺ and anions) in the solution, due to the ionization of acids in water, allows the solution to conduct electricity. This behavior is characteristic of electrolyte solutions, where ions are mobile and can carry an electric current.