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A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf, and boiling point, Th, of the solution. Constants can be found in the table of colligative constants. T = °C T = °C

A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf, and boiling point, Th, of the solution. Constants can be found in the table of colligative constants. T = °C T = °C

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf, and boiling point, Th, of the solution. Constants can be found in the table of colligative constants. T = °C T = °C
Transcribed Image Text:A solution is made by dissolving 0.500 mol of nonelectrolyte solute in 769 g of benzene. Calculate the freezing point, Tf, and boiling point, Th, of the solution. Constants can be found in the table of colligative constants. T = °C T = °C
Colligative Constants Q a macmillan learning Chempendix Constants for freezing-point depression and boiling-point elevation calculations at 1 atm: Kf value* Normal freezing K, value Normal boiling (°C/ m) Physical Constants Solvent Formula (°C/ m) point ( °C) point ( °C) H20 C 6H 6 cyclohexane C 6 H 12 C2H60 water 1.86 0.00 0.512 100.00 Acids and Bases benzene 5.12 5.49 2.53 80.1 Activity Coefficients 20.8 6.59 2.92 80.7 ethanol 1.99 –117.3 1.22 78.4 Activity Series carbon CCI 4 29.8 -22.9 5.03 76.8 tetrachloride Amino Acids camphor C 10 H 16 O 37.8 176 Boiling Points Bond Energies Bond Lengths *When using positive Kf values, assume that ATf is the absolute value of the change in temperature. If you would prefer to define ATfas "final minus initial" temperature, then ATf will be negative and so you must use negative K¢ values. Either way, the freezing point of the solution should be lower than that of Codons the pure solvent. Colligative Constants
Transcribed Image Text:Colligative Constants Q a macmillan learning Chempendix Constants for freezing-point depression and boiling-point elevation calculations at 1 atm: Kf value* Normal freezing K, value Normal boiling (°C/ m) Physical Constants Solvent Formula (°C/ m) point ( °C) point ( °C) H20 C 6H 6 cyclohexane C 6 H 12 C2H60 water 1.86 0.00 0.512 100.00 Acids and Bases benzene 5.12 5.49 2.53 80.1 Activity Coefficients 20.8 6.59 2.92 80.7 ethanol 1.99 –117.3 1.22 78.4 Activity Series carbon CCI 4 29.8 -22.9 5.03 76.8 tetrachloride Amino Acids camphor C 10 H 16 O 37.8 176 Boiling Points Bond Energies Bond Lengths *When using positive Kf values, assume that ATf is the absolute value of the change in temperature. If you would prefer to define ATfas "final minus initial" temperature, then ATf will be negative and so you must use negative K¢ values. Either way, the freezing point of the solution should be lower than that of Codons the pure solvent. Colligative Constants
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