use the soave$/$redlich$/$kwong eqution to calculate the molar volume of saturated liquid and vapour for the substance and conditions given by a$)$propane at $40$degreec$(313\mathrm{.}15$K$)$ where psat$=13\mathrm{.}71$bar b$)$ chlorine at $80$degreec $(353\mathrm{.}15$K$)$where psat$=18\mathrm{.}66$bar c$)$sulfur dioxide at $110$degreec$(383\mathrm{.}15$K$)$ where psat$=35\mathrm{.}01$bar compare results with values found by suitable generalized correlations