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10 AL 39.9°C. the vapor pressures of pure ethanol and isooctane are 130.4 torr and 43.9...
The vapour pressures of the pure components P and Q are 700 Torr and 500 Torr...
The vapour pressures of the pure components P and Q are 700 Torr and 500 Torr respectively. When the two phases are in equilibrium at 1.0 atm, the mole fraction of P in the liquid phase is 0.6 and in the vapour phase 0.4. The activity co-efficient of compound P in the solution on the basis of Raoult’s law is (a) 0.60 (b) 0.72 (c) 0.92 (d) 1.01
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50 °C. The vapor pressures for the pure species are...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50 °C. The vapor pressures for the pure species are psat = 34.10 kPa and Pat = 36.30 kPa. a. (10%) Assuming Raoult's law, calculate the pressure range of the 2-phase region when the mole fraction of hexaflourobenzene is 0.8. b. (10%) Experiments show that this mixture at 50°C has an azeotrope. Show mathematically that Raoult's law is unable to predict an azeotropic behavior. c. (10%) Use the modified Raoult's law with the van...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50°C. The vapor pressures for the pure species are Prat...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50°C. The vapor pressures for the pure species are Prat = 34.10 kPa and Pat = 36.30 kPa. a. (10%) Assuming Raoult's law, calculate the pressure range of the 2-phase region when the mole fraction of hexaflourobenzene is 0.8. b. (10%) Experiments show that this mixture at 50-C has an azeotrope. Show mathematically that Raoult's law is unable to predict an azeotropic behavior. c. (10%) Use the modified Raoult's law with the van Laar...
7.By measuring the equilibrium between liquid and vapor phases of a solution at 30°C at 1.00...
7.By measuring the equilibrium between liquid and vapor phases of a solution at 30°C at 1.00 atm, it was found that XA 0.220 when yA 0.314. Calculate the activities and activity coefficients of both components in this solution on the Raoult's law basis. The vapor pressures of the pure components at this temperature are: pA 73.0 kPa and ps = 92.1 kPa. (XA is the mole fraction in the liquid and yA the mole fraction in the vapor.)
At 100 0C the vapor pressures of pure n-hexane (subscript 1) and pure n-octane (subscript 2)...
At 100 0C the vapor pressures of pure n-hexane (subscript 1) and pure n-octane (subscript 2) are, respectively, p10 = 1836 torr and p20 = 354 torr . A certain liquid mixture of these two compounds has a vapor pressure of 668 torr at the same temperature. A) What is the mole fraction x1 of n-hexane in the liquid mixture. B) What is the mole fraction y1 of n-hexane in the vapor phase above the mixture? C) What is the...
At 100 0C the vapor pressures of pure n-hexane (subscript 1) and pure n-octane (subscript 2)...
At 100 0C the vapor pressures of pure n-hexane (subscript 1) and pure n-octane (subscript 2) are, respectively, p10 = 1836 torr and p20 = 354 torr . A certain liquid mixture of these two compounds has a vapor pressure of 668 torr at the same temperature. A) What is the mole fraction x1 of n-hexane in the liquid mixture. B) What is the mole fraction y1 of n-hexane in the vapor phase above the mixture? C) What is the...
5. Ethanol and methanol are form an ideal solution at 20 °C. Vapor pressure of pure...
5. Ethanol and methanol are form an ideal solution at 20 °C. Vapor pressure of pure ethanol and pure methanol at 20 °C is 44.5 and 88.7 mmHg, respectively. If 100 g of ethanol and 100 g of methanol are mixed into a solution, calculate: (a) the mol fractions of ethanol and methanol in the solution, (b) the partial pressures of ethanol and methanol and total pressure of the solution, and (c) the mol fraction of methanol in a vapor...
9. At 50°C, a liquid solution composed of A (with a mole fraction of 0.28) and...
9. At 50°C, a liquid solution composed of A (with a mole fraction of 0.28) and B has a total vapor pressure of 182 torr and a partial pressure of A of 62 torr. The vapor pressure of pure liquid A is 254 torr and that of pure liquid B is 169 torr. (a) Calculate the activity and the activity coefficient of each component of the liquid based on the Raoult's Law. (b) Calculate the Henry's law constant of A...
The vapor pressure if ethanol (C2H5OH) is 672 torr at 75°C. The vapor pressure of water...
The vapor pressure if ethanol (C2H5OH) is 672 torr at 75°C. The vapor pressure of water is 289 torr at the same temperature. Calculate the mole fraction of ethonal and water in a solution that is 12% ethanol by volume. Can any one help me step-by-step with this?
The measurement of the compositions of the liquid and vapor phases
The measurement of the compositions of the liquid and vapor phases, in equilibrium, of acetone (A) and methanol (M) solutions showedthat, at 57.2 ºC, under a pressure of 1.00 atm, we have xA = 0.430 when yA = 0.536. Calculate the activities and coefficients ofactivity of the two components of this solution based on Raoult's law. Vapor pressures of pure components,at the temperature mentioned, they are: pA∗= 105 kPa and pM∗= 73.5 kPa. (xA is the molar fraction in the...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50 °C. The vapor pressures for the pure species are psat = 34.10 kPa and Pat = 36.30 kPa. a. (10%) Assuming Raoult's law, calculate the pressure range of the 2-phase region when the mole fraction of hexaflourobenzene is 0.8. b. (10%) Experiments show that this mixture at 50°C has an azeotrope. Show mathematically that Raoult's law is unable to predict an azeotropic behavior. c. (10%) Use the modified Raoult's law with the van...
3. Consider the hexafluorobenzene(1)-cyclohexane(2) mixture at 50°C. The vapor pressures for the pure species are Prat = 34.10 kPa and Pat = 36.30 kPa. a. (10%) Assuming Raoult's law, calculate the pressure range of the 2-phase region when the mole fraction of hexaflourobenzene is 0.8. b. (10%) Experiments show that this mixture at 50-C has an azeotrope. Show mathematically that Raoult's law is unable to predict an azeotropic behavior. c. (10%) Use the modified Raoult's law with the van Laar...
7.By measuring the equilibrium between liquid and vapor phases of a solution at 30°C at 1.00 atm, it was found that XA 0.220 when yA 0.314. Calculate the activities and activity coefficients of both components in this solution on the Raoult's law basis. The vapor pressures of the pure components at this temperature are: pA 73.0 kPa and ps = 92.1 kPa. (XA is the mole fraction in the liquid and yA the mole fraction in the vapor.)
5. Ethanol and methanol are form an ideal solution at 20 °C. Vapor pressure of pure ethanol and pure methanol at 20 °C is 44.5 and 88.7 mmHg, respectively. If 100 g of ethanol and 100 g of methanol are mixed into a solution, calculate: (a) the mol fractions of ethanol and methanol in the solution, (b) the partial pressures of ethanol and methanol and total pressure of the solution, and (c) the mol fraction of methanol in a vapor...
9. At 50°C, a liquid solution composed of A (with a mole fraction of 0.28) and B has a total vapor pressure of 182 torr and a partial pressure of A of 62 torr. The vapor pressure of pure liquid A is 254 torr and that of pure liquid B is 169 torr. (a) Calculate the activity and the activity coefficient of each component of the liquid based on the Raoult's Law. (b) Calculate the Henry's law constant of A...
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