For an ethanol-chloroform mixture at 545 mmHg, determine: a) The Liquid - Vapor equilibrium diagram (1pt) b) Boiling temperature with 20% mass of ethanol (1pt) c) The composition of a mixture that has gone through two distillation stages (1pt)
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- The blue line on the diagram illustrates the effect of using fractional distillation to separate a mixture of hexane (C6H14) and heptane (C7H16). If one starts a fractional distillation with a 0.20 mole fraction of hexane, what is the approximate mole fraction of hexane in the vapor phase after two evaporation condensation cycles? Figure B A temperaturecomposition diagram for hexane (C6H14)-heptane (C7H16) mixtures.Calculate the value of the equilibrium constant, Ke , for the reaction Q(g) + X(g) = 2 M(g) + N(g) given that M(g) = Z(g) 6 R(g) = 2 N(g) + 4Z(g) 3 X(g) + 3 Q(g) = 9R(g) Kel = 3.52 K2 = 0.585 Kc3 12.3 K. IIAny of the types of distillation we use to separate a medicinal substance dissolved in a mixture of solvents consisting of Diethylether, Dichloromethane and Dimethylsulfoxide, knowing that the substance loses its medicinal effectiveness when exposed to a temperature higher than 15OC.
- 7.The diagram below is an example of Undistillable Mixtures (T vs Mole Fraction).How many degrees of freedom at the vapor phase,liquid phase and at azeotropic point? Undistillable Mixtures – Azeotropes T= T These types of mixtures cannot be separated using simple distillation processes, because the composition of the liquid phase at the azeotropic point is the same as that of their vapor composition. Vapor Phase T=T T This type of azeotropic phenomenon is the high - boiling azeotropism. This happens when A and B have strong attractive interaction. Liquid Phase Zazeotrope(a) The heat evolved upon dissolution of atmospheric ozone into water is determined to be +5 kcal/mol at 298 K. Given that ozone has a Henry’s constant of 9.4 × 10−3 mol/L/atm at 298 K, determine its Henry’s constant at 273 K. Note that the definition of Henry’s constant is for the process air to water. (b) If the atmospheric ozone concentration in a polluted air is 100 ppbv, what is the concentration in equilibrium with a body of water in that region at 298 K? Note that you need to assume no losses of ozone other than absorption into waterCalculate the values for log Kow and the saturated aqueous solubility (Cw$sat) for bisphenol A. The value for log Kow is 3.62 ; enter your answer as X.XX The value for Cwsat is ; report your answer in units of moles/liter and enter it as X.XX×10(-X). Bisphenol A is closest to "phthalates" H3C CH3 HO HO,
- 3. The partial molar volumes of propanone (acetone) and trichloromethane (chloroform) in a mixture in which the mole fraction of CHC13 is 0.4693 are 74.166 cm³ mol-i and 80.235 cm3 mol-1, respectively. What is the volume of a solution of mass 1.000 kg? 4. Discuss the basic thermodynamic concept behind freezing point depression. 5. Based from activity 2, summarize and discuss the experimental method by which the freezing point of pure acetic acid was determined. 00If a 0.890 m aqueous solution freezes at -2.10 °C, what is the van't Hoff factor, i, of the solute? Consult the table of Kf values. i =The binary water-phenol diagram is given below, in molar fraction, under the total pressure Pt = 1 atm. 1) How many phases are there in the domain marked "I"? 2) From which temperature the mixture become miscible in all proportions? How do you call that temperature? 3) At a temperature T = 50 °C, in a controlled temperature container containing water. Phenol is then poured at the same temperature until the molar fraction of phenol in the mixture XC2H50H is equal to 0.05. Then, we continue to add the phenol gradually, at a constant temperature, to XC2H5OH of phenol in the mixture is XC2H5OH = 0.8. = 0.4. Then finally we stop adding phenol when the molar fraction a. How many phases are present at each one of the three mixture compositions in the container during the addition of the phenol? b. What is the composition of the phases when the fraction of phenol is XC2H5OH = 0.4? c. What is the proportions of the phases with respect to each other when XC2H5OH = 0.4? (Show your calculations)…
- What gas law is applicable to the fractional distillation of ethanol-water mixture?3. Refer to the phase diagram depicted below: When 7 moles of A and 3 moles of B are mixed at 50oC which is then cooled to 10oC the sample turns into two liquid phases, phase I has mole fraction xB=0.14 (see diagram below). Find the phase II mole fraction xB, and then calculate the ratio of amount of substance in phase I to that in phase II using Lever rule. Please enter your answer as a number with two decimals. for example, if the ratio you calculated is 2:3, you enter as 0.67Refer to the ternary phase diagram in Fig. 5E.4. How many phases are present, and what are their compositions and relative abundances, in a mixture that contains 55.0 g of water, 8.8 g of trichloromethane, and 3.7 g of ethanoic acid? Describe what happens when (i) water, (ii) ethanoic acid is added to the mixture.
