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The change in Gibbs free energy (DeltaG) of the system along provides a criterion for the spontaneity of a process at constant temperature and pressure. A change in the free energy of asystem at constant temperature and pressure will be: DeltaG_("system")=DeltaH_("system")-TDeltaS_("system") At constant temperature and pressure: DeltaG_("system")lt0 (Spontaneous) DeltaG_("system")=0 (equilibrium) DeltaG_("system")gt0 (non-spontaneous) Free energy is related to the equilibrium constant as: DeltaG^(@)=2.303RTlog_(10)K_(e). Q. For a reaction to be spontaneous at all temperature. |
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Answer» `DeltaG-ve,DeltaH+ve and DeltaS+ve` |
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