Question

In: Chemistry

The vapor pressure of liquid benzene is 17.7 kPa at 30 ºC and 37.7 kPa at...

The vapor pressure of liquid benzene is 17.7 kPa at 30 ºC and 37.7 kPa at 50 ºC. a) Calculate the enthalpy of vaporization of benzene. b) Estimate the vapor pressure at 10 ºC [use your answer from part (a)]. c) Estimate the normal boiling point of benzene (use a vapor pressure of 1 bar and use the result from part (a)]

Solutions

Expert Solution


Related Solutions

At 300K, the vapor pressure of pure liquid A and liquid B are 37.33 kPa and...
At 300K, the vapor pressure of pure liquid A and liquid B are 37.33 kPa and 22.66 kPa respectively. If we mix 2 mol liquid A with 2 mol liquid B, the total vapor pressure above the solution is 50.66 kPa and the molar fraction of vapor A is 0.60. Assume the vapor is an ideal gas. Calculate (a) the activity of A and B in the solution (b) the Gibbs energy change of mixing ΔmixG (c) If the solution...
1) At 24 C the vapor pressure of water is 3 kPa. The vapor pressure of...
1) At 24 C the vapor pressure of water is 3 kPa. The vapor pressure of water over a sample is 2 kPa, what is the water activity of the sample? 2) The water activity above a saturated NaCl solution is 0.75. If a sample is enclosed in a jar with the NaCl solution and equilibrium is achieved, what is the water activity of the sample? NaCl and the sample are in separate containers within the jar.
The vapor pressures of benzene and toluene at 95◦C are, respectively, 155.7 kPa and 63.3 kPa....
The vapor pressures of benzene and toluene at 95◦C are, respectively, 155.7 kPa and 63.3 kPa. A gaseous mixture consisting of 50 moles of benzene and 50 moles of toluene was cooled to 95◦C. As a result of the cooling, some of the benzene and toluene condensed. If the total pressure above the condensate was 101.3 kPa, calculate: (a) the mole fraction of benzene in the condensate (liquid). (b) the mole fraction of benzene in the gas phase after cooling....
A toluene solution is blended with 25% mass of benzene. The vapor pressure of benzene and...
A toluene solution is blended with 25% mass of benzene. The vapor pressure of benzene and toluene at 25'C are 94.2 torr and 28.4 torr respectively. (a) Calculate the vapor pressure of each component, (b) total pressure of the above solution, and (c) the composition of the vapor in mass percent.
A liquid mixture had 30 moles of A and 70 moles of B. The vapor pressure...
A liquid mixture had 30 moles of A and 70 moles of B. The vapor pressure of pure A is 790 torr and pure B is 630 torr. What is the pressure at which the mixture boils?
The table below shows the vapor pressures, VP (kPa) for n‐hexane and n‐octane. Vapor Pressure (kPa)...
The table below shows the vapor pressures, VP (kPa) for n‐hexane and n‐octane. Vapor Pressure (kPa) Vapor Pressure (kPa) Temp (C) n‐Hexane n‐Octane 68.7 101 13 79.4 137 23 93.3 197 37 107.2 284 58 121.1 400 87 125.7 456 101 Source. J. B. Maxwell, Data Book on Hydrocarbons (a) Assuming ideal solution and gas behavior, construct Txy and xy diagrams for this system at 101 kPa. (b) When a liquid containing 30 mol% n‐Hexane is heated, what is the...
A liquid mixture of benzene-toluene is to be distilled in a fractionating tower at 101.3 kPa...
A liquid mixture of benzene-toluene is to be distilled in a fractionating tower at 101.3 kPa pressure. The feed of 100 kg mol/h is liquid, containing 45 mol benzene and 55 mol% toluene, and enters at 327.6 K. A distillate containing 95 mol benzene and 5 mol toluene and a bottoms containing 10 mol benzene and 90 mol toluene are to be obtained. The reflux ratio R is 4: 1. Determine the kg moles per hour distillate, kg moles per...
Benzene and toluene form an ideal solution. At 25 oC, the vapor pressure of pure benzene...
Benzene and toluene form an ideal solution. At 25 oC, the vapor pressure of pure benzene is 100 torr, and the vapor pressure of pure toluene is 30.0 torr. A solution is prepared of 1.0 mol benzene and 2.0 mol toluene. Some of the solution evaporates in a closed system. What is the mole fraction of benzene in the vapor? A. 0.33 B. 0.43 C. 0.53 D. 0.63 E. 0.73
Estimate the vapor pressure of seawater at 20°C given that the vapor pressure of pure water is 2.338 kPa at that temperature
Estimate the vapor pressure of seawater at 20°C given that the vapor pressure of pure water is 2.338 kPa at that temperature and the solute is largely Na+ and Cl- ions, each present at about 0.50 mol/dm3.
The vapour pressure of pure liquid A at 300 K is 76.7 kPa and that of...
The vapour pressure of pure liquid A at 300 K is 76.7 kPa and that of pure liquid B is 52.0 kPa.  Assume that A and B form ideal solutions and gaseous mixtures. Consider the equilibrium composition of an ideal solution of A and B in which the total pressure above the solution is 70.5 kPa.   (a) Determine the mole fractions of A and B in the liquid solution and in the vapour phase above the solution.   (b) If the actual...
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT