The Gibbs energy for the decomposition of Al_2O_3 at 500°C is as follows: 2/3 Al_2O_3 → 4/3 Al + O_2 , \Delta_rG = +966 kJ mol^{-1} The potential difference needed for electrolytic reduction of Al_2O_3 at 500°C is at least

JEE Mains Model Paper 9

Question : 53 of 90

Marks: +1, -0

The Gibbs energy for the decomposition of Al2O3 at 500°C is as follows:

Al2O3 →

Al + O2 , ΔrG = +966 kJ mol−1
The potential difference needed for electrolytic reduction of Al2O3 at 500°C is at least

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