The vapour pressure of pure ethanol, CH3CH2OH, is 40.0 mmHg at 19 degree C. Determine the...
Vapour Pressure of Solutions of Non-Volatile or Volatile Solutes 31.686 g of a non-volatile solute is dissolved in 460.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 10°C the vapour pressure of the solution is 9.055 torr. The vapour pressure of pure water at 10°C is 9.209 torr. Calculate the molar mass of the solute (g/mol). See example 17.1 on pp865-6 of Zumdahl...
At 20 °C, the vapour pressure of pure ethanol is 32.1 torr and the vapour pressure of pure methanol is 86.2 torr. Assuming ideal behaviour what is the vapour pressure (in torr) at 20 °C of a solution prepared by mixing 2.5 moles of methanol and 3.3 moles of ethanol?
show working please (2) The vapor pressure of pure ethanol at 20°C is 44.6 mmHg, What is the vapor pressure in the mmHg of a solution with 16.0 g of glucose (C6H1206) dissolved in 80.0 g of ethanol (CH3OH) at 20°C.
12. Calculate the vapor pressure of ethanol over 80 proof (40.0% ethanol by volume) at 19°C. The vapor pressure of pure ethanol at this temperature is 40.0 Torr. The density of ethanol is 0.79 g/mL and the density of water is 1.00 g/mL.
Pure water has a vapor pressure of 24.0 mmHg at 25oC. What is the vapor pressure of a solution containing 0.472 mols glucose, C6H12O6, a non- volatile solute (MW = 180 g mol-1) in 5.56 mols water (MW = 18.0 g/mol)? [Given: Kf (water) = 1.86 0C/molal]
19.193 g of a non-volatile solute is dissolved in 180.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 20°C the vapour pressure of the solution is 17.242 torr. The vapour pressure of pure water at 20°C is 17.535 torr. Calculate the molar mass of the solute (g/mol). Now suppose, instead, that 19.193 g of a volatile solute is dissolved in 180.0 g of...
A) The normal boiling point of ethanol, CH3CH2OH, is 78.4 ∘C. When 8.45 g of a soluble nonelectrolyte is dissolved in 100.0 g of ethanol at that temperature, the vapor pressure of the solution is 7.40×102torr. What is the molar mass of the solute?
17.298 g of a non-volatile solute is dissolved in 265.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90°C the vapour pressure of the solution is 519.57 torr. The vapour pressure of pure water at 90°C is 525.80 torr. Calculate the molar mass of the solute (g/mol).
1a: 19.930 g of a non-volatile solute is dissolved in 395.0 g of water. The solute does not react with water nor dissociate in solution. Assume that the resulting solution displays ideal Raoult's law behaviour. At 90°C the vapour pressure of the solution is 521.11 torr. The vapour pressure of pure water at 90°C is 525.80 torr. Calculate the molar mass of the solute (g/mol). 1b: Now suppose, instead, that 19.930 g of a volatile solute is dissolved in 395.0...
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...