Carbon cannot be used in the reduction of Al_ | vedclass

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(D) The reduction of $Al_2O_3$ by carbon is not thermodynamically feasible at moderate temperatures.According to the Ellingham diagram,the line for th

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the enthalpy of formation of $Al_2O_3$ is too high.

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(D) The reduction of $Al_2O_3$ by carbon is not thermodynamically feasible at moderate temperatures.According to the Ellingham diagram,the line for the formation of $Al_2O_3$ lies below the line for the formation of $CO$ or $CO_2$ at most temperatures.This indicates that $Al_2O_3$ is much more stable than the oxides of carbon,and the enthalpy of formation of $Al_2O_3$ is significantly more negative (higher stability) compared to the oxides of carbon.Therefore,carbon cannot reduce $Al_2O_3$ to $Al$ metal under standard conditions.

Carbon cannot be used in the reduction of $Al_2O_3$ because :

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