Questions

1. Using the Peng-Robinson EOS determine the ρ of the supercritical CO₂ when T = 60˚C,

P = 90 bar, R = 8.31451 x 10^-2 L*bar/K*mol and ω = 0.225.

2. When P is above P_c and constant.  How does increasing T (T is already higher than T_c) affect density, velocity, solubility, and diffusivity?

3. Name one aspect about SFE that is BOTH an advantage and disadvantage.

4.  Which characteristics of SFE are similar to liquids and which are similar to gases?