Electrolysis of water
Electrolysis of water is the decomposition of water (H2O) into the gases oxygen (O2) and hydrogen (H2) by means of a direct electric current. To reduce the resistance to the passage of current through water, it is usually acidified by adding a small amount of sulfuric acid or by adding a strong electrolyte such as sodium hydroxide, NaOH.
Electroplating is an electrochemical treatment consisting of coating a metal surface with cations of another metal contained in an aqueous solution.
Standard reduction potential
The standard reduction potential is the potential of the electrode with respect to the standard hydrogen electrode. The more positive (+) the standard reduction potential, the easier it is to accept electrons than hydrogen ions. Check in the simulation what happens when the electrodes are changed.
Polar and non-polar molecules
A polar molecule is a molecule with a non-uniform distribution of electric charge, resulting in it having a plus and a minus end, e.g. water. A non-polar molecule is a molecule with a uniform distribution of electric charge, resulting in it not reacting in the presence of electric fields, e.g. an oil.