Question

Select the correct statements for Ellingharn diagram:

• A. The slope of the curves of the formation of metal oxide is +ve because $\Delta \mathring{G}$ becomes less negative or increases with the rise in temperature
• B. Each curve is a straight line except when some change takes place in phase $(s\to lorl\to g)$
• C. Each curve is not a straight line except when some change takes place in phase $(s\to lorl\to g)$
• D. The slope of the curves of the formation of metal oxide is -ve because $\Delta \mathring{G}$ becomes less negative or increases with the rise in temperature

Answer 1

Answer: (A), (B)

The correct options are
A The slope of the curves of the formation of metal oxide is +ve because $\Delta \mathring{G}$ becomes less negative or increases with the rise in temperature
B Each curve is a straight line except when some change takes place in phase $(s\to lorl\to g)$

For most of the reactions, for the formation of metal oxide ${\left(MxO\right)}_{\left(S\right)}$, the curve is positive.
Except for the processes in which change of phase takes place, each plot is a straight line.