Question

Explain chemical effect of electric current with an activity.

Answer 1

Hint: This will lie in Electrochemistry. When electric current passes through the conducting liquid medium there will be some chemical changes. We can go through the electroplating process for an activity.

Complete step by step answer:
If an electric current passes through a conducting solution it will create some chemical reaction. That may cause formation of bubbles of a gas on the electrodes, deposits of metal on electrodes, changes of colour of solutions etc.

Activity:
Electroplating is a process of depositing one metal over another metal.
In Electroplating, both an anode and the metal part to be coated i.e. cathode are submerged in an electrolytic solution that is composed of a solution of salts, including the metal to be plated. A direct current (DC) of electricity is passed through the solution.
When the electricity flows through the circuit made by the cathode and anode, the electrolyte solution splits up and some of the metal atoms (Coating), it contains, are deposited in a thin layer on top of one of the cathode—it becomes electroplated. All kinds of metals can be plated in this way, including gold, silver, tin, zinc, copper, cadmium, chromium, nickel, platinum, and lead etc.

Note:
For proper functioning the electrodes and electrolyte are made from carefully chosen elements or compounds. Electroplating is a reverse process of Electrolysis and Electroforming are the processes of electrochemistry. Chemical reactions caused by or producing electricity that give scientifically or industrially useful end-products.