Answer the following statement(s) true (T) or false (F)
A. A mixture of propane + n-butane would be an example of a zeotropic mixture.
B. We denote experimental data on a plot with symbols and any model to describe the system behavior as a solid line/curve.
C. The sum of the composition fractions of the components in a phase must sum to 1.
D. According to the Gibbs phase rule, if you have a binary mixture in vapor-liquid equilibrium, you can specify two intensive thermodynamic variables independently.
E. None of the above are false.
A. Incorrect. This is true. Propane + n-butane will form an ideal solution and, thus, will not exhibit an azeotrope.
B. Incorrect. This is true. Experimental data consists of discrete points of data, such as a composition of the vapor phase at a specific temperature and pressure. A model allows you to produce a dependent variable at any given set of independent variables, so one can create a curve by choosing many independent variable points.
C. Incorrect. This is true. The definition of mole and mass fractions in chemistry and chemical engineering is that their sum must equal 1.
D. Incorrect. This is true. Performing the calculation with C = 2, ? = 2; F = 2.
E. Correct. All are true statements.
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