Quantitative equilibrium calculations

Fundamentals
Problems
      Fraction of atrazine
           Help
           Answer
     Retardation factor
           Answer
     Raining out
           Answer
     Carpet
           Help
           Answer
     Sorption kinetics
           Help
           Answer
     Organic pollutants in water
           Answer
     Fish toxicity test
           Answer
     Ethylacetate
           Answer
     Tetrachlorobenzene
           Answer
     Hexachlorobenzene
           Answer
     Chlorobenzene
           Answer
     Toxicity test
           Answer
     Toxicity test - improving...
     3 phases problem
           Answer
     Sorption experiment
           Answer
     HCH
Excercises for an improved intuitive understanding
Questions for recapitulation
Good to know
Minesweeper-problems

3-phase partition problem

Solve the following 3-phase partition problem: Chloroform partitions in a room with a volume of 42 m3 between air, polyurethane foam (5 kg) and activated charcoal (2 kg). The activated charcoal has a specific surface area of 1000 m2/g. Calculate how much (in %) of the total chloroform will reside in which of the phases after equilibration.

all the necessary information:

room temperature : 20°C
foam-air partition constant at 20°C: Ki foam/air = 1.4 * 103 (Lair/kgfoam)
activated charcoal-air adsorption constant at 20°C. Ki activated charcoal/air = 10-5 (m3air/m2activated charcoal)