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 (at. mass of Al = 27)

Question

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 (at. mass of Al = 27) (A) 180 kg (B) 270 kg (C) 540 kg (D) 90 kg

Tardigrade Admin · Accepted Answer

(d) In Hall and Heroult process, 2 Al2O3 + 4C arrow 4 Al + 2CO2 + 2CO but for the removal of only C 02, following equation is possible. 2 Al2 O3 + 3C arrow 4 Al + 3CO2 =363 × 12 =1084 × 27 ∴ For 108 g of Al, 36 g of C is required in above reaction. ∴ For 270 × 103 g of Al required amount of C (36/108) × 270 × 103 = 90 × 103 g = 90 kg

Q. The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270kg of aluminium metal from bauxite by the Hall process is (at. mass of Al=27)

180 kg

270 kg

540 kg

90 kg

Q. The mass of carbon anode consumed (giving only carbon dioxide) in the production of $270 k g$ of aluminium metal from bauxite by the Hall process is (at. mass of $A l = 27$ )