Explain Ellingham diagram
llingham diagrams
The plots between ΔfGθ of formation of oxides of elements and temperature are called Ellingham diagrams. It provides a sound idea about selecting a reducing agent in the reduction of oxides. Such diagrams help in predicting the feasibility of a thermal reduction of an ore. ΔG must be negative at a given temperature for a reaction to be feasible.
Limitations of Ellingham diagrams
It does not take kinetics of reduction into consideration, i.e. how fast reduction will occur cannot be determined.