Chemistry - Metallurgy Question with Solution | TestHub

Ellingham diagrams are a particular graphical form of the principle that the thermodynamic feasibility of a reaction depends on the sign of $\mathrm{\Delta G}$, the Gibbs free energy change, which is equal to $\mathrm{\Delta H} - \mathrm{T\Delta S}$, where $\mathrm{\Delta H}$ is the enthalpy change and $\mathrm{\Delta S}$ is the entropy change. Hence, element below in Ellingham diagram can reduce oxide of element above it.

$\mathrm{C}$ can reduce $\mathrm{FeO}$ at $600 º\mathrm{C}$.