Physical Chemistry Real gases Critical data and equations of state Substitution of(8.15 )and(8.16)into(. 14 =3b m, c (8.15 8a 27Rb (8.16 RT b (8.14) mc gives 8a/276 a 2b9b227b2 (8.17Critical data and equations of state 2 m,c m,c c c V a V b RT P − − = Substitution of (8.15) and (8.16) into (8.14) (8.14) gives 2 2 2 9 27 8 / 27 b a b a b a b Pc = − = (8.16) V b m c 3 , = (8.15) Rb a Tc 27 8 = (8.17) Physical Chemistry Real Gases