Physical Chemistr Nonideal Systems Reaction equilibrium involving pure solids or pure liquids Many reactions involve one or more pure solids or liquids Caco(s)eCao(s)+Co2(8) equilibrium condition I, eq (11.13) K°≡I(a u,=u:+RTIn a RTIna,=A,A' pure solid or liquid (11.20) du=dGm=smdT+vn,dP at const T du;=Vm dP 1010 Reaction Equilibrium involving pure solids or pure liquids Many reactions involve one or more pure solids or liquids. ( ) ( ) ( ) CaCO3 s  CaO s +CO2 g  = (11.13) i  i i,eq 0 i i i eq o K a  ( )  , equilibrium condition i o i = i + RT ln a (11.2)* o RT ai = i − i ln pure solid or liquid (11.20) d = dGm = −Sm dT +Vm dP at const. T di =Vm,i dP Physical Chemistry Nonideal Systems