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ELECTROLYSIS

1.    explain the meaning of the terms electrolysis, inert electrode, anode, cathode and electrolyte and explain conduction in an electrolyte in terms of ions moving and carrying charge; and
2.    predict the products of electrolysis of molten salts including lithium chloride and lead(ll) bromide using graphite electrodes and state appropriate observations at the electrodes.
 


3. interpret and write half equations for the reactions occurring at the anode and cathode for the electrolysis processes  for molten halides and in the extraction of aluminium;  

4. recall the products of electrolysis of dilute sulfuric acid using inert electrodes and the half equations for the reactions occurring at the anode and the cathode;

5.    describe the industrial extraction of aluminium from alumina, demonstrate knowledge and understanding that the alumina has been purified from the ore bauxite and demonstrate knowledge and understanding of the need to replace the anodes periodically;6.    demonstrate knowledge and understanding that recycling aluminium uses only a fraction of the energy needed to extract it from bauxite and saves waste;

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