Question

To produce 36 gram of aluminium of molten aluminium how much faraday of electricity is required

Answer 1

Charge on Al in Al2O3

2Al + 3O = 0

Oxygen has –2

2Al +3(–2) = 0

Al = 3

Change transfer n = 3

Charge required for 1 mol of Al = 3F

Number of moles of Al = 40 /27 = 1.48

The electricity required to produce 1.48 mol of Al = 1.48 × 3 F

= 4.44 F