Qualitative understanding of partition preferences

Introduction
Cavity model
Rules for partitioning
The cavity model in quantitative terms

Selftest
Problems
     1) Give a qualitative explanation
     2) Estimate the extraction efficiency
           Answer
     3) Assign partition constants to substances
           Answer
     4) Fuel accident
           Answer
     5) Mixture of similar isomeres ... ?
           Answer
     6) Extraction with pentane or diethyl ether?
     7) Prediction of partition constants
           Answer
     8) Assign data to substances
           Answer
     9) Explain saturated vapor pressure
     10) Apolar surface
Intermolecular interactions in every day life
FAQ

9) Explain and estimate saturated vapor pressure

At 25°C these liquid compounds have the given saturation vapour pressures:

n-Hexane

20 000 Pa

Hexane-1-ol

110 Pa

1-Chlorhexane

1260 Pa

 

  1. What is the reason for those large differences in saturation vapour pressure?

  2. Could you calculate the saturation vapour pressure for 1-chlorhexanol from the given values?
    Please provide a short explaination for your answer.

  3. Inbetween which of the values above would you rank the saturation vapour pressure of hexanal?

 


You can check your answer in the next lesson.

 

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