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- Two hundred kilogram of liquid contains 40% butane, 40% pentane and 20% hexane by mass. Determine the mole fraction composition of the liquid and the mass fraction composition on a hexane-free basis.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.Explain the significance of the Clapeyron equation and of the Clausius-Clapeyron equation.
- A polynomial fit to measurements of the total volume of a binary mixture of A and B isv = 778.55 − 22.5749x + 0.568 92x2 + 0.010 23x3 + 0.002 34x4where v = V/cm3, x = nB/mol, and nB is the amount of B present. Derive an expression for the partial molar volume of B.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?There are 2 components and 2 phases with pressure at 1atm. Use the Phase Rule to solve for the degree of freeom.
- Consider a container of volume 100 L which is divided by the partition into the two compartments of equal size. In the left compartment, there is nitrogen at 1.0 atm and 25 °C. In the right compartment, there is hydrogen at the same temperature and pressure. Calculate the Gibbs energy of mixing and entropy of mixing and when the partition is removed.Hexafluorobenzene (C6F6) has a vapour pressure of 1.23 × 104 N m–2 at 300 K. Predict the vapour pressure that will be observed at 340 K. The enthalpy of vaporization of hexafluorobenzene is 31.7 kJ mol–1. a. 2.80 x 103 N m–2 b. 1.10 x 105 N m–2 c. 6.70 x 104 N m–2 d. 5.50 x 104 N m–2 e. 1.20 x 104 N m–2An atomic beam is designed to function with (a) cadmium, (b) mercury. The source is an oven maintained at 380 K, and the vapour escapes though a small slit of dimensions 10 mm by 1.0 × 10−2 mm. The vapour pressure of cadmium is 0.13 Pa and that of mercury is 12 Pa at this temperature. What is the number of atoms per second in the beams?
- Steam pressures for pure CCl4 and SiCl4 are given as 0.4226 bar and 0.7999 bar respectively, while the temperature is 50°C. For a mixture prepared with these two liquids and boiling at 50°C under a pressure of 0.5333 bar, find the composition of the phases as a mole fraction and a mass fraction. [M(CCl4):153,82 g/mol, M(SiCl4):169,9 g/mol]Imagine that we have a closed system containing pure isobutane that is in a state of vapor-liquid equilibrium at known P sat < Pc. What can we say about mean translational kinetic energy of the molecules in the liquid (KL) and vapor (KV ) phases? a) KV − KL > 0 b) KV − KL < 0 c) KV − KL = 0 d) We need more information.What is maximum number of phases that can bein mutual equilibrium in three-component system?