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Choose the correct option :
Statement I: Ellingham diagrams can be constructed to analyze the thermodynamic stability of metal oxides, sulfides, and halides.
Statement II: Ellingham diagrams represent the variation of standard Gibbs free energy change with temperature
for the formation of metal oxides only.
Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Answers (1)
Statement I is correct. Ellingham diagrams can indeed be constructed to analyze the thermodynamic stability of metal oxides, sulfides, and halides. These diagrams show the variation of the standard Gibbs free energy change with temperature for the formation of these compounds. By plotting the values of
against temperature, one can compare the stabilities of different metal oxides, sulfides, and halides at various temperatures.
However, Statement II is incorrect. Ellingham diagrams represent the variation of the standard Gibbs free energy change with temperature for the formation of metal oxides, not only metal oxides. The diagrams can include other compounds like sulfides and halides as well, as mentioned in Statement I.
Therefore, the correct option is 3) Statement I is correct but Statement II is incorrect.
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