at a given temprature the vapour pressure ethonal is 44 torr and vapour pressure of methonal is 94 torr. for equmolar mixture the expected vapour pressure of the mixture is?
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at a given temprature the vapour pressure ethonal is 44 torr and vapour pressure of methonal is 94 torr. for equmolar mixture the expected vapour pressure of the mixture is?
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- What is maximum number of phases that can bein mutual equilibrium in three-component system?Calculate the change in freezing point of water , with ethalpy of fusion = 6.009 kJ/mole) and the density of ice is 0.9167 g/cc while for that liquid is 0.9999 g/cc for an increase in pressure of 1.00 atm at 273 K.A mixture of methylbenzene and benzene is an ideal solution. Explain why the mixture constitutes an Ideal solution. Use the diagram below to sketch a well labelled graph to show the variation of vapour pressure against composition for the mixture above. Hence suggest a practical technique by which a mixture of benzene and methylbenzene could be separated into its components.
- In the study of the vapour pressure of chloroform is determined. Chloroform is placed in a container and allowed to reach a temperature op 28C. A vacuum is then created at which point the chloroform start to boil. The pressure and temperature are recorded. Subsequently the vacuum is gradually reduced by allowing a small amount of air into the vessel, thereby increasing the pressure in the vessel. At each of these higher pressures, the solution is heated and till it boils again and the temperature point and pressure is recorded at which the solution boils. This is repeated until the vessel reaches room pressure. What is the dependent and independent variable?The pure vapour pressure of benzene (C6H6) is 745 torr; the pure vapour pressure to toluene(C7H8) is 290 torr. What is the mole fraction of benzene in a benzene/toluene mixture whose total vapour pressure is 500 torr? Give answer to 3dp.At 100 degrees celcius the vapour pressures of hexane and octane are 1836 and 354 torr,respectively. A certain liquid mixture of these two compounds (that is both totallymiscible) has a vapour pressure of 0.88 atm at 100 degrees celcius. Calculate the compositions inboth the liquid and the vapour phases.
- Calculate the freezing point of water at 95 bar and 450 bar since the melting point of ice is 0⁰C and the melting enthalpy is 6.010 kJ/mol. (Accept that the densities of water in liquid and solid state are 0.997 G/ and 0.917 g/cm3 and remain constant.)The normal boiling point of hexane is 69.0 °C. Estimate (i) its enthalpy of vaporization and (ii) its vapour pressure at 25 °C and at 60 °C.if ethanol has a vapor pressure of 0.08 bar and a molecular weight of 46 g/mol and water has a vapor pressure of 0.03 bar and a molecular weight of 18 g/mol. c) if the total pressure measured at these conditions is 0.02 bar, what can we conclude from the interaction between ethanol-water, respect to ethanol-ethanol and water-water? Justify your answer briefly.