Liquid ethanol, for which T = 1.09 10 6 kPa 1 , has a relatively

Liquid ethanol, for which κ_T = 1.09 × 10⁻⁶ kPa⁻¹, has a relatively high isothermal compressibility, which can have a significant effect on its fugacity at high pressures. Using the data in the previous problem, calculate the fugacity of liquid ethanol at 25 MPa and 126°C

a. Assuming liquid ethanol is incompressible 

b. Using the value for the isothermal compressibility of liquid ethanol given above

previous problem

The vapor pressure of liquid ethanol at 126°C is 505 kPa, and its second virial coefficient at this temperature is −523 cm³/mol. 

a. Calculate the fugacity of ethanol at saturation at 126°C assuming ethanol is an ideal gas. 

b. Calculate the fugacity of ethanol at saturation at 126°C assuming ethanol is described by the virial equation truncated after the second virial coefficient.