Metals & ICP spectroscopy answers
1. (a) Alumina melts at 2045 oC. The molten solution of alumina in cryolite melts at about 950 oC so much less energy is needed to obtain liquid aluminum(III) ions. (b) Cathode (−) : Al3+(l) + 3e− ⟶ Al(l)Anode (+) : 2O2−(l) ⟶ O2(g) + 4 e− (c) Some of the oxygen gas released reacts with the graphite anode to form carbon dioxide.C(s) + O2(g) ⟶ CO2(g) (d) The carbon dioxide released from the anode is a greenhouse gas...