Question

When an electric current is passed through an aqueous solution of the following compounds, the concentration of cation, as well as anion, will not change for (assume a constant volume of the electrolytic solution):

A. CsCl
B. KNO₃
C. AgNO₃
D. HCl

Answer 1

The concentration of cations and anions will not change when an electric current is passed through the mentioned aqueous solutions. The compounds CsCl, KNO₃, AgNO₃, and HCl dissociate into ions when dissolved in water, and these ions will remain in the solution without any change in concentration.

Step-by-step explanation:

When an electric current is passed through an aqueous solution of the following compounds, the concentration of cation, as well as anion, will not change:

1. A. CsCl: This compound dissociates into Cs+ and Cl- ions when dissolved in water, and both ions will remain in the solution without any change in concentration.
2. B. KNO₃: KNO₃ dissociates into K+ and NO₃- ions when dissolved in water, and both ions will remain in the solution without any change in concentration.
3. C. AgNO₃: AgNO₃ dissociates into Ag+ and NO₃- ions when dissolved in water, and both ions will remain in the solution without any change in concentration.
4. D. HCl: Although HCl is an acid and does react with water to produce H3O+ and Cl- ions, the concentration of these ions will remain constant as long as the volume of the electrolytic solution remains constant.