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 (Atomic mass : Al = 27)

Solution

Correct option is

90 kg

 

2 Al2O3  +  3 C → 4 Al + 3 CO2

Production of  of Al consumes C of anode

               

∴production of 270 kg of Al consume C anode

               

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