A mystery solution (with a mole fraction of solute of 0.15) has a vapor pressure of 65.0 torr at 85 C. What is the vapor pressure of the pure solvent at 85.0 C. Assume that the solute is nonelctrolyte.
A mystery solution (with a mole fraction of solute of 0.15) has a vapor pressure of...
A mystery solution (with mole fraction of solute of 0.15) has a vapor pressure of 65.0 torr at 85 degrees C. What is the vapor pressure of the pure solvent at 85 degrees C? Assume the solution is a nonelectrolyte.
Which of the following regarding the vapor pressure of a solution containing a nonvolatile solute is NOT correct? A. The amount by which the vapor pressure of the solution is reduced reflects the mole fraction of the solute in the solution. B. The presence of a nonvolatile solute reduces the mole fraction of the pure solvent. C. The condensation rates of the pure solvent and the solution are probably about equal in a closed container. D. The evaporation rate of...
Show the calculations for both problems 11) Niobium (Nb) is a metal that crystalizes with cubic unit cell that is body-centered (BCC). Nb has an atomic radius of 143 pm. What is its density in g/cm3? A) 4.28 g/cm3 B) 17.1 g/cm3 r=143 C) 9.33 g/cm3 D) 52.8 g/cm3 E) 8.57 g/cm3 VEISIUI 3 12) A mystery solution (with a mole fraction of solute of 0.15) has a vapor pressure of 65.0 torr at 85.0 °C. What is the vapor...
Please show steps to solve 7 and 8 thank you! 7) Version 2 7) Which of the following items are true for the phase dias below? the following items are true for the phase diagram of carbon dioxide as seen Supercritical . Solid Pressure (not to scale) - 0.7 C -78.5°C Temperature (not to scale) A) Unlike many other substances, carbon dioxide does not have a pressure and temperature combination where liquid, solid, and gas phases coexist. B) Carbon dioxide...
1e. An aqueous solution has a mole fraction of solute of (4.73x10^-2). The density of the solution is (1.1400x10^0) g/mL and the solute has a molar mass of (8.020x10^1) g/mol. What is the Molarity of solute of this solution? 1f. At an unknown temperature a solution made of (7.740x10^0) g of a non-volatile solute dissolved in 100.0 g of water has a vapor pressure of (5.51x10^1) mm Hg. What is the vapor pressure of pure water (in mm Hg) at...
the liquid and ya the mole fraction in the vapor.) 8. At 90°C, the vapor pressure of pure methylbenzene is 400 Torr and that of pure 1,2- dimethylbenzene is 150 Torr. What the composition of a liquid mixture that boils at 90°C when the pressure is 0.50 atm? What is the composition of the vapor produced?
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...
What is the composition of a methanol (CH3OH) – propanol (CH3CH2CH2OH) solution that has a vapor pressure of 187 torr at 40°C? At 40°C, the vapor pressures of pure methanol and pure propanol are 303 and 44.6 torr, respectively. Assume the solution is ideal. Mole fraction of methanol = Mole fraction of propanol =
What is the composition of a methanol (CH3OH) – propanol (CH3CH2OH) solution that has a vapor pressure of 126 torr at 40°C? At 40°C, the vapor pressures of pure methanol and pure propanol are 303 and 44.6 torr, respectively. Assume the solution is ideal. Mole fraction of methanol = Mole fraction of propanol =
Homework RAUULI LAW CHEM4LIU Problem #1: What is the vapor pressure of an aqueous solution that has a solute mole fraction of o.1000? The vapor pressure of water is 25.756 mmHg at 25 °C.