Which of these models is predictive for excess molar Gibbs free energy?
A. The 1-parameter Margules equation
B. UNIFAC
C. The 2-parameter Margules equation
D. UNIQUAC
E. None of the above.
A. Incorrect. The Margules equations are correlative.
B. Correct. UNIFAC is a predictive model using group contributions and their interactions.
C. Incorrect. The Margules equations are correlative.
D. Incorrect. UNIQUAC is correlative. Reread the end of Section 11.8, where UNIQUAC is discussed.
E. Incorrect. One of these methods is correctly described as a predictive excess molar Gibbs free energy model.
You might also like to view...
In a commercial building, customers who enter the area where you are working should be _____.
a. politely asked to leave the work space b. given a step-by-step description as you work c. provided with appropriate personal protective equipment d. asked to sign a liability waiver
Genetic engineering is used in insect control
Indicate whether the statement is true or false.
Hidden lines are not shown on assembly prints unless absolutely necessary for clarity.
Answer the following statement true (T) or false (F)
The opening of the EGR valve pintle does NOT cause a change in the MAP sensor reading. This could cause ________
A) The engine to stall B) The transmission to downshift C) An EGR flow rate DTC to set D) A high idle speed