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

7) Prediction of partition constants

 

Question:

Hexadecane / air partition constants of three compounds are given in the following table. Estimate whether the missing partition constants are smaller, equal or higher than the hexadecane/air partition constant.

Note: olive oil is an alkylester, hexadecane is an apolar compound

 

benzene

chlorobenzene

phenol

ln Khexadecane/air

6.42

8.42

8.67

ln Kolive oil/air

6.51

8.60

10.7

ln Kwater/air

1.45

1.89

11.1

all values in mair3/msolvent3

 

 

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