MetallurgyHard
Question
Select correct statement
Options
A.In the decomposition of an oxide into oxygen and solid/liquid metal, entropy increases.
B.Decomposition of an oxide is an endothermic change
C.To make ᐃGo negative, temperature should be high enough so that T ᐃSo > ᐃHo.
D.All are correct statements.
Solution
(A) When the oxide undergoes a phase change, there will be an increase in the entropy of the oxide.
(B) It is true statements, HgO
Hg + 1/2O2
(C) For a reduction process the change in the free energy, ᐃGo must be negative and to make ᐃGo negative temperature should be high enough so that TᐃSo > ᐃHo.
(B) It is true statements, HgO
Hg + 1/2O2 (C) For a reduction process the change in the free energy, ᐃGo must be negative and to make ᐃGo negative temperature should be high enough so that TᐃSo > ᐃHo.
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