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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc7221061-cab3-4d12-b574-9340e14d2678%2Fa580ebcf-bef6-4a5b-b264-71a9d10da3e4%2F9lm5fys_processed.jpeg&w=3840&q=75)
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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