The quantity of charge required to obtain one mole of aluminium from `Al_(2)0_(3)` is

Options

A. 1 F
B. 6 F
C. 3 F
D. 2 F

Answer

C

Explanation

`Al_2O_3 to 2Al`
`2Al^(3+) + 6e^(-) to 2Al `
`therefore Al^(3+) + 3e^(-) to Al`
Thus, 3 F of charge is required to obtain 1 mole of Al from `Al_2O_3`