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Metallurgical Engineering · Q89

Physical Metallurgy

Engineering and GATE · Metallurgical Engineering · question 89

Q89

In an Ellingham diagram, the standard free energy change ΔG° for the oxidation reaction of a metal M given by : xM(s) + O2(g) ⟶ MxO2(s), is plotted as a function of temperature. The slope of this line is positive because

A.
ΔS° is positive
B.
ΔS° is negative
Answer
C.
ΔH° is positive
D.
ΔH° is negative

Answer: Option B

Solution

Answer: Option B
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