Use the thermodynamic data below to determine the standard free energy change, ∆Gº, for the following reaction at 25ºC.


NH4Cl(s) → NH4+(aq) + Cl–(aq) H = 14.0 kJ

S° for NH4+(aq) = 111.2 J/mol•K
S° for Cl–(aq) = 56.6 J/mol•K
S° for NH4Cl(s) = 94.6 J/mol•K