A reaction having equal energies of activation for forward and reverse reactions has

In which of the following reactions, standard reaction entropy change ($$\Delta $$S^o) is positive and standard Gibb's energy change ($$\Delta $$G^o) decreases sharply with increasing temperature ?

Standard enthalpy of vaporisation $$\Delta $$_vapH^o for water at 100^oC is 40.66 kJ mol^$$-$$1. The internal energy of vaporisation of water at 100^oC (in kJ mol^$$-$$1) is

The enthalpy of fusion of water is 1.435 kcal/mol. The molar entropy change for the melting of ice at 0^oC is