Barrier technology - Introduction - Activity coefficient data and models

4 important questions on Barrier technology - Introduction - Activity coefficient data and models

What kind of solution will behave ideally?

A very diluted solution
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Is the activity coefficient of a non-polar molecules (e.g. Fat, hexane) in water high or low? And does the concentration matter?

It is high, even at low concentrations. Only a very small amount dissolves in the water, so it behaves almost ideally.
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What kind of solutions tend to behave ideal?

  • Very dilute solutions
  • With a non-polar molecules, this molecule does not dissolve much
  • Solutions in which only Van-der-Waals type interactions take place
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What are sorption isotherms?

Relations between the activity and the concentration of components.
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