1.

Consider the ΔG°f and ΔH°f (kJ/mol) for the following oxides. Which oxide can be most easily decomposed to form the metal and oxygen gas?(a)  ZnO (ΔG° = - 318.4, ΔH° = - 348.3)(b)  Cu2O(ΔG° = - 146.0, ΔH° = - 168.8)(c)  HgO (ΔG° = - 58.5, ΔH° = - 90.8)(d)  PbO (ΔG° = - 187.9, ΔH° = - 217.3)

Answer»

Correct option  (c)  HgO (ΔG° = - 58.5, ΔH° = - 90.8)

Oxide with lowest –ve  Δ



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