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The mass of carbon anode consumed(giving only carbon dioxide) in the production of 270Kg of aluminum metal from bauxite by the Hall's process is


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$2Al_2O_3+3C\rightarrow 4Al+3CO_2$
$\therefore$ Carbon required $=\large\frac{12\times 3\times 270}{4\times 27}$
$\Rightarrow 90kg$
Hence (a) is the correct answer.
answered Jan 8, 2014 by sreemathi.v

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