Quantitative prediction of K values

Introduction

Fragment models
sp-LFERs
pp-LFERs
Comparison of the various methods
Predictive models based on molecular structure

Critical remarks on approaches from chemical engineering

Selftest
Problems
     Problem 1
     Problem 2
     Problem 3
           Answer
     Problem 4
           Answer
     Problem 5
           Answer
     Problem 6
           Answer
     Problem 7
     Problem 8
     Problem 9

Problem 4

Your task is to check whether two polymers of unknown origin do possess similar sorption properties at 15°C. In order to limit your efforts, you are advised to measure air/polymer partitioning for only five different compounds. What type of compounds would you use? Which criteria do these compounds have to fulfill?