Given that an initial mobile phase mixture of 40/60 MeOH/H2O gave a k’ of phenol of 12.6, determine what percentage of methanol would be required for a desired capacity factor of 4.0 for phenol
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- The partial vapour pressures of each component in a mixture of propanone (acetone. A) and trich loromethane (chloroform, C) were measured at 35 °c with the following results: Xc 0 0.20 0.40 0.60 0.80 1 pc/kPa 0 4.7 10 17.9 28.0 36.4 pA/kPa 43.6 32.3 23.3 12.3 4.9 0 Confirm that the mixture conforms to Raoult's law for the component in large excess and to Henry's law for the minor component. Find the Henry's law constants.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 curveThere 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.
- 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.By measuring the equilibrium between liquid and vapour phases of a propanone(P)/methanol(M) solution at 57.2 °C at 1.00 atm, it was found that xP = 0.400 when yP = 0.516. Calculate the activities and activity coefficients of both components in this solution on the Raoult’s law basis. The vapour pressures of the pure components at this temperature are: pP* = 105 kPa and pM* = 73.5 kPa. (xP is the mole fraction in the liquid and yP the mole fraction in the vapour.)The mean activity coefficients of HBr in three dilute aqueous solutions at 25° C are 0.930 (at 5.0 mmol kg-1), 0.907 (at 10.0 mmol kg-1), and 0.879 (at 20.0 mmol kg-1). Estimate the value of B in the extended Debye-Hückel law, with C = 0.
- In the system NaCl-H2O, a simple eutectic is observed at −21.1°C for a solution containing 23.3% by weight NaCl where NaCl•2H2O and ice crystallize out of the mixture. At a composition of 27% by weight of NaCl and at −9°C a peritectic point exists where the dihydrate decomposes to form anhydrous NaCl. The temperature coefficient of solubility of anhydrous NaCl is very small and positive. Make a rough sketch for the system showing clearly the phases in equilibrium in the various areas and along the curves of the diagram.1. Calculate the capacity factor, k' for methyl paraben and propyl paraben. 2. Calculate the selectivity factor, a for the two-component mixture.In a closed, insulated system, the vapour pressure of water at 15.21 °C is 1928 Pa. What percentage of the standard atmospheric pressure (1 atm) is this? (Value between 0 and 100 with 3DDP).
- I've already calculated the x and y values for Solvent 1 (x=1 y=0) and Solvent 2 (x=1 y=1) and determined Solvent 1 to be unimolecular and Solvent 2 to be bimolecular but can you please help with the third part to the question. Thank you!A solute is added to a water- benzene mixture and mixture and shaken vigorously. 25ml benzene layer contains 0.1g solute and 25ml water layer contains 0.25g solute. What is the value of distribution coefficient or partition coefficient?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?
