The question is: 8) A solution contains 150.8 grams of NaCl in 678.3 grams of water....
A solution contains 21.04 grams of NaCl in 0.225 kg water at 25°C. What is the vapor pressure of the solution? (The vapor pressure of pure water is 23.7 torrat 25 °C.)
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...
A solution is created by dissolving 125 grams of Glucose (C6H12O6) a nonvolatile nonelectrolyte in 1150 mL of water at 25°C. Calculate the vapor pressure (torr) of the resulting solution. Assume that the density of water at 25°C is 1.0 g/mL and that the vapor pressure of pure water is 23.76 torr..
The vapor pressure of pure water at 25.0 °C is 23.76 torr. The vapor pressure of a solution containing 5.40 g of a nonvolatile substance in 90.0 g of water is 23.32 torr. What is the molecular weight of the solute?
Predict the vapor pressure in torr of a solution prepared by mixing 17.24 g of solid NaCl with 55.4 g of water at 25 degrees C. The vapor pressure of pure water at 25 degrees C is 23.76 torr.
a) The vapor pressure of pure water at 30°C is 31.8 torr. An aqueous solution of urea had a vapor pressure of 29.3 torrat the same temperature. What is the mole fraction of urea in the solution? b) How many grams of sucrose, C12H22O11(MW=342), must be dissolved in 552 g H2O (MW=18.016) to give a vapor pressure 2.0 torr lower than of pure H2O at 20°C? The VP of H2O at 20°C is 17.5 torr.
please please answer both questions . Thank you !!!
Question 9 (1 point) Benzene and toluene form an ideal solution. At 298 K, what is the mole fraction of benzene in the liquid that is in equilibrium with a vapor that has equal partial pressures of benzene and toluene? At 298 K, the vapor pressures of pure benzene and pure toluene are 95 and 28 tor respectively 0.50 0.77 0.23 0.30 none of these Question 10(1 point) 340.0 g of...
7. Consider the expression of Raoult's law, Psolution = Xsolvent ·P⁰solvent . Here, Psolution = vapor pressure of the solution, P⁰solvent = vapor pressure of pure solvent, Xsolvent = mole fraction of the solvent. What is the mole fraction of solvent in a solution with a vapor pressure of 47.90 torr, if the vapor pressure of the pure solvent is 52.82 torr? 8. The boiling point of a solution increases directly as a function of the number of moles of...
A solution containing ethylene glycol and water has a vapor pressure of 4.87 torr at 10°C. Pure water has a vapor pressure of 9.21 torr at 10°C. What is the mole fraction of ethylene glycol in the solution? Be sure to report your answer to the correct number of significant figures.
10 AL 39.9°C. the vapor pressures of pure ethanol and isooctane are 130.4 torr and 43.9 torr respectively. At this same temperature (39.9°C), a solution of ethanol-isooctane is prepared that has a mole fraction, Xethanol = 0.90, a vapor phase with yethanol = 0.67, and p = 185.9 torr. (a) Calculate the activity and activity coefficients of each component. (b) Calculate the vapor pressure of this solution using Raoult's law. (8 pts)