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The mass of carbon anode consumed (givin...

The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270kg of Al metal from bauxite by Hall process is:

A

270kg

B

540kg

C

90kg

D

180kg

Text Solution

Verified by Experts

The correct Answer is:
C
`underset(3xx12g)(3C)+2Al_(2)O_(3)rarrunderset(4xx27=108g)(4Al+3CO_(2))`
`because` 108g Al is produced by consuming =36g carbon
`therefore 270xx10^(3)g` Al will be produced by consuming
`=(36)/(108)xx270xx10^(3)g` of carbon
`=90xx10^(3)g`=90 kg carbon.
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