5.4.3.4 electrolysis of aqueous solutions

Question 1

The ions discharged when an aqueous solution is electrolysed using inert electrodes depend on..

Answer 1

The relative reactivity of the elements involved

Question 2

At the negative electrode (cathode), _________ is produced if the metal is more reactive than hydrogen

Answer 2

Hydrogen

Question 3

At the positive electrode (anode), ______ is produced unless the solution contains halide ions when the halogen is produced

Answer 3

Oxygen

Question 4

The produce of oxygen / hydrogen due to reactivity and involving of halide ions, happens because in the aqueous solution _____ __________ break down producing the hydrogen ions and hydroxide ions that are discharged

Answer 4

Water molecules.