AP EAPCET 25-Aug-2021 Shift 1 Paper

According to standard Gibbs free energy equation
ΔG°=ΔH°−TΔS°
i.e., ΔG°=−TΔS°
ΔG°∝−T
It means ΔG° is inversely proportional to temperature due to negative sign present in Gibbs free energy equation.
Hence, lesser the temperature i.e., 75°C, greater the value of ΔGvap ( ΔG°vap>0).
At 100°C,ΔG°vap value is lesser than that at temperature 75°C.
∴ Vaporisation of water at 75°C has ΔG°sap>0.