Estimate the freezing point of 150 cm^3 of water sweetened with 7.5 g of sucrose.
Q4. (3 marks) Estimate the freezing point of 150 cm of water to which 13.0 g of sucrose (molar mass = 342.29 g/mol) has been added. Kf of water is 1.86 K kg mol-? Q5. (5 marks) The ideal solubility of solute B at temperature T is given by AfusH1 In Xg RT Where Arush is the enthalpy of fusion of solute and Te is the freezing point of solute. Estimate the ideal solubility of lead in bismuth (as kg...
4. Freezing Point Depression and Boiling Point Elevation Problems-7.5 pts Calculate the freezing point depression and the boiling point elevation of a solution containing 17.l g of sucrose, CiH:Oi and 200. g of water. What are the actual freezing and boiling points of the solution? New freezing point New boiling point =
Calculate the freezing point of a solution that contains 68.4 g of sucrose (table sugar, 342 g/mol) in 300. g of water. One mole of sucrose is 342 g. Kf for H2O = 1.86°C/m.
How many grams of sucrose (C12H22O11) are needed to lower the freezing point of 148 g of water by 6.00 ºC?
What is the freezing temperature of a solution of 115.0 g of sucrose, C12H22O11, in 350.0 g of water, which freezes at 0.0 °C when pure?
O ADVANCED MATERIAL Predicting relative boiling point elevations and freezing Four liquids are described in the table below. Use the second column of the table to explain the order order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select ' higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boili point, and so on. Note: the density...
Calculate the freezing point (in degrees C) of a solution made by dissolving 2.56 g of sucrose in 37.2 g of water. The Kfp of the solvent is 1.86 K/m and the normal freezing point is 273 K. Enter your answer to 2 decimal places.
17 Marks: 1 What is the freezing point of water made by dissolving 10.74 g of magnesium chloride in 86.59 g of water? The freezing-point depression constant of water is 1.86 °CIm Answer: 18 Marks: 1 What is the freezing point of water made by dissolving 16.31 g of sodium chloride in 93.18 g of water? The freezing-point depression constant of water is 1.86 °C/m. Answer 19 Marks: 1 What is the freezing point of water made by dissolving 46.18...
When a certain liquid of molar mass 46.1 g/mol freezes at -3.65 degrees celsius its density changes from 0.789 g/cm^3 to 0.801 g/cm^3. Its enthalpy of fusionis 8.68 kJ/mol. Estimate the freezing point of the liquid at 100 MPa.
An aqueous sucrose (C12H22O11) solution of unknown concentration is found to have a freezing point of –0.912°C. What is the normal boiling point and the partial pressure (in torr) of water at 25°C of this solution? Kb (H2O) = 0.51°C/m; P°(H2O) = 23.800 torr at 25°C.