AIEEE 2005 Chemistry Solved Paper

Section: Chemistry

Question : 34 of 74

Marks: +1, -0

Aluminium oxide may be electrolysed at 1000∘C to furnish aluminium metal (Atomic mass =27 amu; 1 Faraday =96,500 Coulombs). The cathode reaction is Al3++3e−→Al0 To prepare 5.12‌kg of aluminium metal by this method would require

[AIEEE 2005]

5.49×107C of electricity
1.83×107C of electricity
5.49×104C of electricity
5.49×101C of electricity

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