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123172 Laboratory Module 1 Ouestions AlzOg is dissolved in molten cryolite and aluminium. What effect does a change in a) The cell Potential is one of the reactants in the manufacture of alumina concentration have on production l. b) The energy requirements for aluminium (Hint: this relates to part B of the lab work) Z. If you didn,t use a carbon anode but instead had an “inert” anode (these have been developed) then the reaction would be: 2AlzOz –‘ 4AI+ 3Oz so oxygen is evolved instead of COz a) In what form is the energy supplied Ui Witt this require 1nor. oi leiJ electrical energy than the traditional process? (whY?) c) What other advantages might such a process have? (Hint: this relates to part A of the lab work) 3. AlzOl dissolves in molten fluoride (Na3AlF6)’ It can also be dissolved NaOH solution. Why is aluminium not tnui. by electrolysis of Al3* solution? Discuss in terms of standard electrode potentials. (Hint: this part relates to part C of the lab work) in hot aqueous from aqueous