The volume change on mixing for the liquid methyl formate(1) + liquid

11.1. The body veer on mixing for the mellifluous methyl formate(1) + mellifluous ethanol(2) regularity at 298.15 K may be closely represented by J. Polack, Lu, B.C.-Y. 1972. J. Chem Thermodynamics, 4:469: ∆Vmix = 0.8x1x2 cm3/mol a. Using this apposition, and the postulates V1 = 67.28 cm3 /mol, V2 = 58.68 cm3 /mol, indicate the molar body of combinations at x1 = 0, 0.2, 0.4, 0.6, 0.8, 1.0 in cm3/mol. b. Analytically identify the aloft look and appearance that and devise these favoring molar extravagance bodys as a duty of x1.


11.4. A current containing equimolar methanol(1) + benzene(2) at 350 K and 1500 mmHg is to be adiabatically flickered to ethereal constraining. The two-parameter Margules standard is to be applied after a while A12 = 1.85, A21 = 1.64. Express all flicker equations in stipulations of Ki values and Ki values in stipulations of Modified Raoult’s law. a. List all the mysterious variables that demand to be indicated to unfold for the exit. b. List all the equations that adduce to indicate the mysterious variables.


11.7. The extravagance Gibbs enthusiasm for a mellifluous combination of n-hexane(1) + benzene(2) at 30°C is represented by GE = 1089 x1x2 J/mol. a. What is the conceit constraining for an equimolar combination at 30°C? b. What is the dew constraining for an equimolar combination at 30°C? c. What is the conceit latitude for an equimolar combination at 760 mmHg? d. What is the dew latitude for an equimolar combination at 760 mmHg?


11.15. The (1) + (2) regularity forms an azeotrope at x1 = 0.75 and 80°C. At 80°C, , . The mellifluous sight can be standarded by the one-parameter Margules equation. a. Appreciate the breath coefficient of factor 1 at x1 = 0.75 and 80°C. [Hint: The referring-to tenuity (absorbed in example 11.2) is uniformity at the azeotropic qualification.] b. Qualitatively outline the P-x-y and T-x-y diagrams that you expect


11.21. Suppose a vessel contains an equimolar combination of chloroform(1) and triethylamine(2) at 25°C. The subjoined postulates are serviceable at 25°C: a. If the constraining in the vessel is 90 mmHg, is the combination a mellifluous, a gas, or twain mellifluous and gas? Justify your apology. b. Provide your best appreciate of the body of the vessel below these qualifications. State your assumptions.

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