Chemistry - Thermodynamics - II Question with Solution | TestHub

In pyrometallurgy, metals are extracted from ores and concentrates through heat treatment. This process involves converting the ore to a metal oxide, followed by the reduction of the oxide to the metal using carbon or carbon monoxide. Metals such as iron, copper, zinc, and manganese are obtained by this technique. The Ellingham diagram is a graph showing the variation of the standard free energy of formation ($\Delta G^{\circ }$) of metal oxides with temperature. The diagram also shows lines for the formation of CO and CO₂. Using the provided Ellingham diagram, answer the following questions.