4. Camphor, (C10H16O; 152.0 g/mol) is a chemical substance that
is obtained from the Formosa camphor tree. Camphor is widely used
in the polymer and pharmaceutical industries. A solution of camphor
is prepared by mixing 30.00 grams of camphor with 986.25 grams of
ethanol, (C2H5OH; 46.00 g/mol) .
Useful information:
Ethanol’s vapor pressure at 25.0oC is 84.61 mm Hg
Normal boiling point of ethanol 78.76 oC
kb for ethanol is 1.22 oC/m.
Solution’s density at 25.0oC is 0.825 g/mL
a. Determine the actual boiling point of the solution.
b. Determine the Psoln for this camphor ethanol mixture.
c. What is the molarity (M) of this solution?
d. What is the osmotic pressure for this solution?
4. Camphor, (C10H16O; 152.0 g/mol) is a chemical substance that is obtained from the Formosa camphor...
A solution is made by dissolving 0.749 mol of nonelectrolyte solute in 861 g of benzene. Calculate the freezing point, Tf, and boiling point, Tb, of the solution. Constants may be found here. Solvent Formula Kf value* (°C/m) Normal freezing point (°C) Kb value (°C/m) Normal boiling point (°C) water H2O 1.86 0.00 0.512 100.00 benzene C6H6 5.12 5.49 2.53 80.1 cyclohexane C6H12 20.8 6.59 2.92 80.7 ethanol C2H6O 1.99 –117.3 1.22 78.4 carbon tetrachloride CCl4 29.8 –22.9 5.03 76.8...
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Enter your answer in the provided box. A 249-ml benzene solution containing 2.55 g of an organic polymer has an osmotic pressure of 8.27 mm Hg at 19°C. Calculate the molar mass of the polymer. - g/mol Enter your answer in the provided box. Calculate the molality of a 5.93 M ethanol (C2H5OH) solution whose density is 0.9307 g/mL. Ethylene glycol (EG), CH2(OH)CH2 (OH), is a common automobile antifreeze. It is water soluble and...
A solution is made by dissolving 0.585 mol of nonelectrolyte solute in 877 g of benzene. Calculate the freezing point, Tf, and boiling point, Tb, of the solution. Constants can be found in the table of colligative constants. Constants for freezing-point depression and boiling-point elevation calculations at 1 atm: Solvent Formula Kf value* (°C/m) Normal freezing point (°C) Kb value (°C/m) Normal boiling point (°C) water H2O 1.86 0.00 0.512 100.00 benzene C6H6 5.12 5.49 2.53 80.1 cyclohexane C6H12 20.8...
A solution is made by dissolving 0.592 mol of nonelectrolyte solute in 767 g of benzene. Calculate the freezing point, Te, and boiling point, Tb, of the solution. Constants can be found in the table of colligative constants. T = Colligative Constants Constants for freezing-point depression and boiling-point elevation calculations at 1 atm: Solvent Formula Kf value* Normal freezing Kb value Normal boiling (°C/m) point (°C) (°C/m) point (°C) water H20 1.86 0.00 0.512 100.00 benzene 5.12 5.49 2.53 80.1...
The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.54 grams of chromium(II) acetate, Cr(CH3COO)2 (170.1 g/mol), in 158.2 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C....
I need help with problem 16. Not problem 16 under chapter 13 set
5.
*9. 9. The vapor pressure of pure toluene, CyHx, is 137 torr at 60°C. What is the vapor pressure of toluene in a solution made by dissolving 25.0 grams of the nonelectrolyte glucose, C6H12O6, in 50.0 grams of toluene at 60°C? 10. The vapor pressure of water is 118 torr at 55°C. How many grams of urea, CO(NH2)2 must be added to 67.4 grams of water...
A sulfuric acid solution containing 571.6 g of H2SO4 per liter of solution has a density of 1.329 g/cm3. Calculate the following quantities for the solute in this solution. 9 pts 1. i. Mass percent ii. Molality iii. Molarity Table 1. Reference data Density @ Vapor Normal 20°C Pressure (torr) H20 1.86 0.00 0.512 100.00 0.998 17.5 2.53 80.1 0.8765 98.5 Normal point (oC) lKb value) boiling! (PC/m) point (C) Substance Formula Formula Kr value* Krvalue -20°C (°C/m) freezingb (g/mL)...