Practice Environmental Implications (5) - Soil-Air Partition Constants

Practice: Environmental Implications

Lesson 5Soil-Air Partition Constants

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8 questions

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2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a partitioning constant?
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Think about how substances mix in water versus settling in soil.
Question 2.
Define mass balance in terms of environmental science.
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Imagine keeping track of all your ingredients when cooking a recipe.
3Question 3.
What does the partitioning constant indicate?
- Chemical solubility
- Distribution of contaminants
- Chemical toxicity
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It relates to how substances behave in different environments.
4Question 4.
True or False? A mass balance must account for all species in a chemical system.
- True
- False
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Think about conservation laws in science.
Question 5.
If a contaminant has a partitioning constant of 5, and 200 kg is introduced into 1000L water and a soil matrix of 300kg, calculate the expected concentration in each phase if full equilibrium is assumed.
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You may need to convert units and remember the mass balance!
Question 6.
Explain how soil composition (such as organic carbon content) could affect the partitioning of a hydrophobic contaminant. What calculations would need to be modified?
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Think about how water affinity and solid binding might differ by composition.

4 more questions in this section. Enroll free to practise them all.