9. Determine the specific volume of saturated vapour by Redlich-Kwong equation for the following, and compare results with those given in the tables of properties. a. Propane at -25°C where psat = 2.018 bar b. Propane at 50°C where psat = 17.119 bar Isobutane at —25°C where psat = 0.5865 bar C.

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