Estimate the molar volume of isobutylene, Chemistry

Estimate the molar volume of Isobutylene at 230  C and 32 bar.  Compare your estimate to what you would obtain with the ideal gas law

The Pitzer method is a common methodology used to improve the accuracy of PVT data estimates obtained from the compressibility chart.  In this method, an acentric factor , ω, is defined as:

450_Estimate the molar volume of Isobutylene.png

80_Estimate the molar volume of Isobutylene1.pngis the reduced saturation pressure at a temperature that is 70% of the critical temperature.  The compressibility is then 

450_Estimate the molar volume of Isobutylene2.png

are functions of temperature and pressure but are the same for all substances (but ω varies from substance to substance).  Values for ω, Z0 and Z1 are tabulated in Lee-Kesler tables.

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