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 (Atomic Mass Of Al = 27)

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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 (Atomic mass of Al = 27)

180 kg
270 kg
540 kg
90 kg

diffcult

Solution

Correct option is

90 kg

In Hall and Heroult process,

Only for removal of CO₂, following equation is possible

3 × 12 = 36 4 × 27 = 108

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