Give two examples in which the colour of the solution changes when electric current is passed through them.

Dear student,

Following are the two examples in which the color of the solution changes when the electric current is passed through them-

1. Copper sulfate solution- When electricity is passed, the copper sulfate dissociates into copper and sulfate ions.
2. Silver nitrate solution- When electricity is passed through this solution, silver ions (Ag⁺) and nitrate ions split.

They both are used in electroplating.

Regards,