The Ellingham diagram represents:

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(A) The Ellingham diagram is a graphical representation that helps in predicting the feasibility of the thermal reduction of an ore.It consists of plo

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change of $\Delta G$ with temperature

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(A) The Ellingham diagram is a graphical representation that helps in predicting the feasibility of the thermal reduction of an ore.It consists of plots of the Gibbs free energy change $(\Delta G)$ versus temperature $(T)$ for the formation of oxides of common metals and reducing agents.The reaction typically represented is: $2xM_{(s)} + O_{2(g)} \rightarrow 2M_xO_{(s)}$.Since $\Delta G = \Delta H - T\Delta S$,the slope of the line in the Ellingham diagram is equal to $-\Delta S$.

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