Q. An electrolysis setup is created and an electrical current is passed through a dilute solution of aqueous Potassium Iodide.


  • State the product that will be produced at the cathode.
  • State the product that will be produced at the anode.
  • Write out the half equation for the reaction taking place at the cathode.
  • Write out the half equation for the reaction taking place at the anode.


Q. Water is a poor conductor of electricity. Although it does contain some Hydrogen ions H+ / H3O+ and some Hydroxide ions OH- due to a small amount of dissociation, water can be made into a slightly better conductor if it is slightly acidified with, say for example dilute Sulphuric Acid. Predict the electrolysis products when an electric current is passed through acidified water. Write out the half equation is taking place at each electrode and the full balanced equation for the reaction.


Q. If a solution of aqueous Copper Nitrate is electrolysed, what would be the electrolysis products? Write the half equations occurring at both electrodes.


Q. What difference, if any, would there be to the products of the electrolysis above if Copper Nitrate was swapped for Potassium Nitrate?




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