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(van’t hoff) use van’t hoff to calculate freezing and boiling points; don’t know what went wrong

(van’t hoff) use van’t hoff to calculate freezing and boiling points; don’t know what went wrong

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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(van’t hoff) use van’t hoff to calculate freezing and boiling points; don’t know what went wrong
If the osmotic pressure of a 7.68x10-2-M aqueous solution of KCI was found to be 3.38 atm at 20°C, what would be the "observed" van't Hoff factor? 1.83 You are correct. Previous Tries Your receipt no. is 159-263 ? Use the above van't Hoff factor to predict the freezing point of this solution. Note that the corresponding molality would be 7.75×10-2 m, given that the density of the solution is 0.997 g/cm3. °C Ke for water is 1.86°C Kg/mol. Submit Answer Incorrect. Tries 6/99 Previous Tries Use the above van't Hoff factor to predict by how many degrees the boiling_point of this solution will be elevated above that for pure water. °C Submit Answer Tries 0/99
Transcribed Image Text:If the osmotic pressure of a 7.68x10-2-M aqueous solution of KCI was found to be 3.38 atm at 20°C, what would be the "observed" van't Hoff factor? 1.83 You are correct. Previous Tries Your receipt no. is 159-263 ? Use the above van't Hoff factor to predict the freezing point of this solution. Note that the corresponding molality would be 7.75×10-2 m, given that the density of the solution is 0.997 g/cm3. °C Ke for water is 1.86°C Kg/mol. Submit Answer Incorrect. Tries 6/99 Previous Tries Use the above van't Hoff factor to predict by how many degrees the boiling_point of this solution will be elevated above that for pure water. °C Submit Answer Tries 0/99
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