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Give the relation between gas-phase composition and liquid-phase composition at equilibrium.
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- Introduction of determination of excess molar volume of binary mixture of water and methanol by measuring density ?Suppose that in a phase diagram, when the sample was prepared with the mole fraction of component A equal to 0.40 it was found that the compositions of the two phases in equilibrium corresponded to the mole fractions xA,α = 0.60 and xA,β = 0.20. What is the ratio of amounts of the two phases?When 2.0 g of aspirin was shaken up in a flask containing two immiscible liquids it was found that the mole fractions in the two liqu ids were 0.11 and 0.18. When a further 1.0 g of aspirin was added, it was found that the mole fraction in the first liquid increased to 0.15. What would you expect the mole fraction in the second liquid to become?
- The following temperature-composition data were obtained for a mixture of octane (O) and methylbenzene (M) at 1.00 atm, where x is the mole fraction in the liquid and y the mole fraction in the vapour at equilibrium. The boiling points are 110.6oC and 125.6oC for M and O, respectively Plot the temperature-composition diagram for the mixture. What is the composition of the vapour in equilibrium with the liquid of composition (i)Xm =0.250 and (ii) Xo =0.250?The following temperature/composition data were obtained for a mixture of two liquids A and B at 1atm, where x is the mole fraction in the liquid and y the mole fraction in the vapour at equilibrium.T (°C) 110 120 130 140xA 0.73 0.43 0.25 0.10yA 0.96 0.78 0.60 0.36The boiling points are 105°C for A and 150°C for B. What is the composition of the vapour in equilibrium with the liquidof composition (a) xA = 0.35 and (b) xB = 0.25?There are two separate phases, one with a composition of 12% phenol and the other with a composition of 60% phenol, from a 210 gram phenol-water mixture at 60 °C with a composition of 35% phenol. Calculate the masses of these phases.
- Identify the effect of the condition on the indicated parameter. Write increase, decrease, or no effect , and provide an explanation. The test tube used in the determination of the ΔHrxn for nitric acid was still wet with water. [ magnitude of ΔHrxn].Define the relative amounts of liquid and vapor phases in a saturated mixtureare specified by the quality x.There are two separate phases, one with a composition of 12% phenol and the other with a composition of 60% phenol, from a 210 gram phenol-water mixture with 35% phenol at 60oC. Calculate the masses of these phases.
- The vapor pressures of two volatile organic compounds, compound 1 and compound 2, at 20 °C are 79.2 torr and 194.7 torr, respectively. What is the gas phase mole fraction of compound 2 above a solution containing an equimolar mixture of the two compounds?Please enter your response in standard notation to three significant figures.Describe the distillation of partial miscible liquid in terms of phase diagram.Sketch the non-ideal vapour pressure-composition curve of element X and nitrous acid, HNO2 where the composition of azeotropic mixture is 40% X at 40ºC and the boiling point of X is higher than HNO2. Explain the vapour pressure of each composition and distillation process of above mixture using the curve
