Considering the Ellingham diagram,which of th | vedclass

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(C) According to the Ellingham diagram,a metal can reduce the oxide of another metal if its own oxide formation curve lies below the curve of the meta

Vedclass · Accepted Answer

$Mg$

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(C) According to the Ellingham diagram,a metal can reduce the oxide of another metal if its own oxide formation curve lies below the curve of the metal oxide being reduced.This is because the metal with the curve lower in the diagram has a more negative Gibbs free energy of formation $(-\Delta G)$ for its oxide.Magnesium $(Mg)$ forms $MgO$,and its formation curve lies below the formation curve of alumina $(Al_2O_3)$ at temperatures below $1623 \ K$.Therefore,$Mg$ can reduce $Al_2O_3$ to $Al$.

Considering the Ellingham diagram,which of the following metals can be used to reduce alumina $(Al_2O_3)$?

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