375 370 365 360 355 350 345 340 0.1 0A 0.6 0.7 0.8 0.9 0.2 0.3 05 A A Mole fraction B B The depicted liquid-vapor diagram is O Isobaric O Isothermic Isocratic Gradient Temperature (K)
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- The pressure of the saturated vapor of benzene (vapor in equilibrium with liquid) is 101.32 kPa at 80°C and 4.81 kPa at 5.5°C, respectively. The latter pressure and temperature correspond to the triple point of benzene. Calculate the approximate molar heat of vaporization ∆Hmv of benzene (Clausius - Clapeyron equation).The normal boiling point of liquid pentane is 309 K. Assuming that its molar heat of vaporization is constant at 26.8 kJ/mol, the boiling point of C5H12 when the external pressure is 1.36 atm is K. Please provide only typed answer solution no handwritten solution needed allowedWhat is the change in the boiling point of water at 1000 C per Pa change under atmospheric pressure conditions? The molar enthalpy of vaporization is 40.69 kJ mol-1, the molar volume of liquid water is 0.019 x 10-3 m3 mol-1, and the molar volume of steam is 30.199 x 10-3m3 mol-1, all at 100.000 C and 1.01325 bar. (Hint: change in temperature per change in pressure, dT/dP).
- 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.At the pressure of 1.68 atm, the enthalpy of fusion is 4.96 kJ/mol at freezing point 140.83 K and enthalpy of vaporization is 32.82 kJ/mol at boiling point 398.75 K. Calculate the slope dP/dt (atm/K) of the solid-vapor boundary for gas A at 169.07 K. Assume gas A behaves ideally.The normal boiling point of liquid bromoethane is 311k. Assuming that its molar heat of vaporization is constant at 28.7 kj/mol, the boiling point of C2H5Br when the external pressure is 0.698atm is
- Carbon tetrachloride melts at 250 K. The vapor pressure of the liquid is 10539 Pa at 290 K and 74518 Pa at 340 K. The vapor pressure of the solid is 270 Pa at 232 K and 1092 Pa at 250 K. Calculate the normal boiling point and ∆Svaporization at the boiling point and calculate the triple point pressure and temperature.A rigid tank contains water vapour at 250oC and an unknown pressure. When the tank is cooled to 195oC, the vapour starts condensing as shown in the figure. Estimate the initial pressure in the tank.What is w when 1.83 kg of H20(1), initially at 25.0 °C, is converted into water vapour at 185 °C against a constant external pressure of 1.00 atm? Assume that the vapour behaves ideally and that the density of liquid water is 1.00 g/ml (Remember to include a+or-sign as appropriate.) Enter your answer in acceptable SI units, accurate to 3. significant figures. Use an acceptable Sl symbol for units.
- (3A) Calculate the Gibbs free energy of mixing for 50.0 g water and 50.0 g ethanol at constant 298 K and1.00 bar. What is it about your answer that tells vou that this mixing is spontaneous?AmixG = NRT (x1 In x1 + x2 In x2)The liquid-vapour equilibrium diagram of the acetone-chloroform mixture is shown below. A mixture containing 40% (molar percentage) of chloroform was heated to a temperature of 60°C, under a pressure of 1 atm. a) For a temperature of 60°C, what is the molar fraction of chloroform in the liquid phase and what is the molar fraction in the vapor phase, respectively?b) What is the molar fraction of chloroform and acetone at the azeotropic point?It is well known that the temperature at which water freezes to ice or boils at a pressure of 1 atm, are 0°C and 100°C. In the next two tasks, we will now investigate what the temperatures would be at the top of Mount Everest, where the pressure is only 0.337 bar. The standard molar enthalpy of fusion of water at 0°C is ΔfusHmo = 6.008 kJ mol-1 and the standard molar enthalpy of vaporization of water at 100°C is ΔvapHmo = 40.656 kJ mol-1. The density of liquid water at 0°C is ρ(l) = 999.9 kg m-3, while the density of ice at 0°C is only ρ(s) = 916.2 kg m-3. The densities and enthalpies are assumed to be independent of temperature. 1) Calculate the temperature at which ice melts on top of Mount Everest. 2) Calculate the temperature at which water boils on top of Mount Everest.
