Question

On the basis of the information available from
the reaction
4 Al + O₂ ⟶ 2 AI₂O₃, △G = - 827 kJ mol⁻¹ of O₂
3 3
the minimum e.m.f required to carry out an
electrolysis of Al₂O₃ is (F = 96500 C mol⁻¹)
(a) 8.56 V (b) 2.14 V
(c) 4.28 V (d) 6.42 V

Answer 1

YOUR ANSWER IS IN THE ATTACHMENT PLZZ REFER TO THE ATTACHMENT

MARK me BRAINLIEST

Answer 2

(b) 2.14 V

Explanation:

For O2, ΔG = -nFE°

Therefore E° = ΔG/-nF = -827000 / (-2 * 96500) = 4.28

Minimum EMF required to carry out electrolysis of AI₂O₃ = 4.28 / 2 = 2.14 V

Hence Option B is the answer.