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QAIPMT-2005-Ch-2520: NEET 2005 Chemistry - Class 12 AIPMT-2005-Ch-2520 Solution: The mass of carbon anode consumed (giving only carbon dioxide)…
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: Al = 27)
Multiple Choice Options
- A 270 kg
- B 540 kg.
- C 90 kg
- D 180 kg
Step-by-Step Verified Solution
2Al 2 O 3 + 3C _ 4Al + 3CO 2
From the above equation,
3 mol _ 12 g mol �1 = 36 g of carbon is consumed
to give 4 mol _ 27 g mol �1 = 108 g of Al
So, 108 g of Al is produced by 36 g of carbon
_ 270000 g of Al is produced by
= 36 108 _ 270000 of C
= 90000 g of C
= 90 kg of C