. The mass of carbon anode consumed
(giving only carbon dioxide) in the production of 270 kg of aluminium metal from bauxite by the Hall process is
(a) 270 kg
(b) 540 kg
(c) 90 kg
(d) 180 kg
(Atomic mass: Al=27 )
Correct Option is: (C)
3C + 2Al2O3 ⟶ 4Al + 3CO2
4 moles of Al is produced by 3 moles of C.
1 mole of Al is produced by 3/4 mole of C.