Consider the `DeltaG_(f)^(@)` and `DeltaH_(f)^(@)` (kJ`//`mol) for the following oxides. Which can be most easily decomposed to form the metal and oxygen gas?
A
`ZnO(DeltaG^(@)=-318.4, DeltaH^(@)=-348.3)`
B
`Cu_(2)O(DeltaG^(@)=-146.0, DeltaH^(@)=-168.8)`
C
`HgO(DeltaG^(@)=-58.5, DeltaH^(@)=-90.8)`
D
`PbO(DeltaG^(@)=-187.9, DeltaH^(@)=-217.3)`
Text Solution
Verified by Experts
The correct Answer is:
C
`DeltaG^(@)=-RTlnK, " K"uarr"stability of reactant"darr`
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