Recall that electrolytes are ionic compounds in the molten state or dissolved in water
Recall that electrolytes are ionic compounds in the molten state or dissolved in water
Describe electrolysis as a process in which electrical energy, from a direct current supply, decomposes electrolytes
Explain the movement of ions during electrolysis, in which:
a) positively charged cations migrate to the negatively charged cathode b) negatively charged anions migrate to the positively charged anode
Explain the formation of the products in the electrolysis, using inert electrodes, of some electrolytes, including:
a) copper chloride solution b) sodium chloride solution c) sodium sulfate solution d) water acidified with sulfuric acid e) molten lead bromide (demonstration)
Predict the products of electrolysis of other binary, ionic compounds in the molten state
Write half equations for reactions occurring at the anode and cathode in electrolysis
Explain oxidation and reduction in terms of loss or gain of electrons
Recall that reduction occurs at the cathode and that oxidation occurs at the anode in electrolysis reactions
Explain the formation of the products in the electrolysis of copper sulfate solution, using copper electrodes, and how this electrolysis can be used to purify copper
Core Practical: Investigate the electrolysis of copper sulfate solution with inert electrodes and copper electrodes