Describe with a well labelled diagram the equipment used to carry out electrolysis!!.
Let us understand with an example.
Electrolysis of water:
Electrolysis means using electric current to make a chemical reaction possible which is otherwise do not occur. Electrolysis of water means passing electric current through water to decompose it into hydrogen gas and oxygen gas.
Cathode - Graphite rod
Anode - Graphite rod
Hydrogen and oxygen gases are collected at cathode and anode respectively.Reaction:
The reaction that takes place during the process can be shown as:-
2H 2 O → 2H 2 +O 2
At cathode:- Reduction
2 H + (aq) +2e - → H 2
At anode:- Oxidation
OH - (aq) → OH + e -
4 OH → 2H 2 O + O 2