Question

The Gibb's energy for the decomposition of Al₂O₃ at 500°C is as follows

(2/3)Al₂O₃ → (4/3)Al + O₂, Δ_rG = + 960 kJ mol^-1 

The potential difference needed for the electrolytic reduction of aluminium oxide (Al₂O₃) at 500°C is at least

(a) 4.5 V

(b) 3.0 V

(c) 2.5 V

(d) 5.0 V

Answer 1

Correct option (c) 2.5 V

Explanation :

Total number of AI atoms in