Electrolysis of solutions
Electrolysis of solutions Ions are free to move in solution of the compounds. But sometimes we cannot get a metal because of its highly reactivity. This is because of water in the solution. Water molecule effects the electrolysis. When solutions are electrolyzed, hydrogen being a non – metal, is deposited on cathode. Because hydrogen is an exceptional case, donate 1 electron per hydrogen atom. H + + e - à H But hydrogen is a diatomic molecule So 2H + + 2e - à H 2 Why is hydrogen given off? We know water molecules are present in solution. Take any solution from table 7.6, For example calcium nitrate, wate...