where e ando are parameters associated to the atoms. Show that this potential has a minimum located at T* = 21/6g.

Given: gE/RT = 4 x1x22 Determine the expression for the activity coefficient for component 1. Then, evaluate γ1∞.

A question in chemical engineering.

The second virial coefficient is related to pair-wise potential function via B(T) = 2πNA (1- e-/kr) r²dr. Use the hard sphere pairwise potential function to find B(T).

Compute the fugacity and chemical potential for CO2 at 323 K and 5 bar. At these conditions, CO2 is described by the virial equation of state truncated at the second virial coefficient. Assume that the interaction potential between CO2 molecules can be described by the spherically symmetric square-well potential.

Help with the following question. Which of the temperature scales in common use can be used directly in the Stefan-Boltzmann law? 

How many intensive variables are necessary to completely specify the state of pure water and pure glycerol at temperatures above 18 degrees C. What are they? If the pressure is fixed at 1 bar, how many intensive variables are necessary?

Sketch very roughly the phase diagrams for water and carbon dioxide and use them to answer this question: at a pressure of X atmospheres and a temperature Y degrees Kelvin,what is the phase of water, and what is the phase of carbon dioxide Y=9.43 X=943

E Open with Google Docs OCESSES OF PURE SUBSTANCES.pdf EXAMPLES A closed rigid vessel having a volume of 100 m3 contains 10 m3 of saturated liquid water and 90 m3 of saturated water vapor at 1.0 MPaa. Heat is transferred until the vessel filled with saturated vapor. Determine the heat transfer.

A mixture of three components (A, B, and C) enters a separation process.The three components appear in the distillate with variable composi-tion. In contrast, only B and C appear in the bottom. Write a proper set ofmaterial balance equation