Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (At. Mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is \[A{{l}^{3}}+3{{e}^{-}}\to Al{}^\circ \] To prepare 5.12kg of aluminium metal by this method would require [AIEEE 2005]

\[1.83\times {{10}^{7}}C\] of electricity

\[5.49\times {{10}^{7}}C\] of electricity

\[5.49\times {{10}^{4}}C\] of electricity

\[5.49\times {{10}^{1}}C\] of electricity

Aluminium oxide may be electrolysed at 1000°C to furnish aluminium me

1.	Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (At. Mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is \[A{{l}^{3}}+3{{e}^{-}}\to Al{}^\circ \] To prepare 5.12kg of aluminium metal by this method would require [AIEEE 2005]
A.	\[5.49\times {{10}^{7}}C\] of electricity
B.	\[1.83\times {{10}^{7}}C\] of electricity
C.	\[5.49\times {{10}^{4}}C\] of electricity
D.	\[5.49\times {{10}^{1}}C\] of electricity
Answer» B. \[1.83\times {{10}^{7}}C\] of electricity

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Aluminium oxide may be electrolysed at 1000°C to furnish aluminium metal (At. Mass = 27 amu; 1 Faraday = 96,500 Coulombs). The cathode reaction is \[A{{l}^{3}}+3{{e}^{-}}\to Al{}^\circ \] To prepare 5.12kg of aluminium metal by this method would require [AIEEE 2005]

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