#3.22
Recall that electrolytes are ionic compounds in the molten state or dissolved in water
#3.23
Describe electrolysis as a process in which electrical energy, from a direct current supply, decomposes electrolytes
#3.24
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
#3.25
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)
#3.26
Predict the products of electrolysis of other binary, ionic compounds in the molten state
#3.27
Write half equations for reactions occurring at the anode and cathode in electrolysis
#3.28
Explain oxidation and reduction in terms of loss or gain of electrons
#3.29
Recall that reduction occurs at the cathode and that oxidation occurs at the anode in electrolysis reactions
#3.30
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
#3.31
Core Practical: Investigate the electrolysis of copper sulfate solution with inert electrodes and copper electrodes