A solution is made by mixing 100.0 g acetone (CH3COCH3) and 100.0 g methanol (CH3OH). a. What is the vapor pressure of this solution at 25C? b. What is the composition of the vapor expressed as a mole fraction? Assume ideal solution and gas behavior. (At 25 C the vapor pressures of pure acetone and pure methanol are 271 and 143 torr, respectively.) The actual vapor pressure of this solution is 161 torr. Explain any discrepancies

What is the composition of a methanol (CH3OH) – propanol (CH3CH2CH2OH) solution that has a vapor pressure of 143 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 =

Calculate the freezing point and the boiling point at 1 atm of a solution containing 30.0 g of cane sugar (MM= 342 g/mol) and 150 g water. A solution containing 6.35 g nonelectrolyte dissolved in 500g of water freezes at -0.465°C. Determine the molecular weight of the solute. The vapor pressure of a pure water at 26.0°C is 25.21 torr. The vapor pressure of a solution which contains 20 grams glucose, C6H12O6, in 70 grams water? The average osmotic pressure of blood at 25°C is 7.7 atm. How many grams of glucose (C6H12O6) is needed to prepare a 110L solution that is isotonic with blood at 25°C? A solution contains 5.0 g ethylene glycol, C2H4(OH)2, and 95 g water, H2O, by mass. The density of the solution is 1 g/mL. Find the a) freezing point of the solution b) osmotic pressure at 35°C.

1. The vapor pressure of benzene is 73.03 mm Hg at 25 °C. A nonvolatile, nonelectrolyte that dissolves in benzene is testosterone. Calculate the vapor pressure of the solution at 25 °C when 14.86 grams of testosterone, C19H28O2 (288.4 g/mol), are dissolved in 228.3 grams of benzene. benzene = C6H6 = 78.12 g/mol. 2. The vapor pressure of water is 23.76 mm Hg at 25°C. How many grams of antifreeze (ethylene glycol), CH2OHCH2OH , a nonvolatile, nonelectrolyte (MW = 62.10 g/mol), must be added to 257.3 grams of water to reduce the vapor pressure to 23.32 mm Hg? water =  = 18.02 g/mol. 3. The common laboratory solvent water is often used to purify substances dissolved in it. The vapor pressure of water is 23.76 mm Hg at 25 °C. In a laboratory experiment, students synthesized a new compound and found that when 67.88 grams of the compound were dissolved in 297.6 grams of water, the vapor pressure of the solution was 23.23 mm Hg. The compound was also found to be nonvolatile and a…

The vapor pressure of carbon tetrachloride, CCl4, is 0.354 atm, and the vapor pressure of chloroform, CHCl3, is 0.526 atm at 316 K. A solution is prepared from equal masses of these two compounds at this temperature. Calculate the mole fraction of the chloroform in the vapor above the solution. If the vapor above the original solution is condensed and isolated into a separate flask, what will the vapor pressure of chloroform be above this new solution?

At a certain temperature the vapor pressure of pure benzene (C,H) is measured to be 0.24 atm. Suppose a solution is prepared by mixing 114. g of benzene and 132. g of thiophene (C,H,S). Calculate the partial pressure of benzene vapor above this solution. Round your answer to 2 significant digits. Note for advanced students: you may assume the solution is ideal. olo atm x10 Ar

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A solution made by dissolving 150.0 g of an unknown compound in 320.0 mL of benzene to make a solution which has a freezing point 18.6 °C lower than that of pure benzene. Kf for benzene is 5.12 °C/m and the density of benzene is 0.877 g/mL. The solution contains 1.02 moles of the unknown. What is the molar mass of the unknown compound?

Calculate the vapor pressure of water above this solution at 338 K. The vapor pressure of pure water at this temperature is 0.2467 atm. A soluton of nonvolitile solute in water has a boiling poit of 383.0 K

How many of the following statements is/are true. А. The vapor pressure of a solvent over a solution decreases as the mole fraction of the solvent increases in the solutic В. The solubility of a gas increases as the temperature increases. С. The vapor pressure of a solvent over a solution is less than that of pure solvent. D. The greater the pressure of a gas over a solution the greater its solubility. Е. lonic solutes dissociate in solution causing an enhancement of all colligative properties. 5 O 2 M 1 N4