4. Evaluation of Results

Try these first

1. 1.

   Define partitioning in environmental science.

   Hint

   Think about where a chemical goes in an environmental scenario.

2. 2.

   What does K_oc indicate?

   Hint

   Consider what happens when chemicals are mixed with soil.

3. 3.

   What does K_oc stand for?

   • A. Mass of chemical in water
   • B. Organic carbon-water partition coefficient
   • C. Henry coefficient

   Hint

   Think about its role in understanding contaminant behaviors.

4. 4.

   True or False: Higher K_oc values indicate a greater preference for water over soil.

   • True
   • False

   Hint

   Consider what K_oc measures.

5. 5.

   A river is contaminated with 150 kg of a chemical with a K_oc of 2.5. Calculate how much of the chemical would be found in the water and soil, assuming maximum solubility in the water is 5 kg.

   Hint

   Focus on the solubility limit for the water.

6. 6.

   Evaluate the implications of not considering undissolved chemicals when calculating mass balance in an environmental spill scenario.

   Hint

   Think about what 'total mass' might include in this context.