Practice Complexity In Aquatic Chemistry (1.7) - Soil-Air partition constants

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10 questions

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6 sample questions

Question 1.
What does K_oc represent?
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Think about how it relates to organic matter.
Question 2.
Why do organic chemicals tend to bind more to organic matter than to mineral surfaces?
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Consider what occupies the binding sites on minerals.
3Question 3.
What does a higher log K_oc indicate?
- Higher water affinity
- Lower water affinity
- Equal affinity
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Think about a chemical's preference.
4Question 4.
Is Cr 6+ more toxic than Cr 3+?
- True
- False
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Consider their solubility in water.
Question 5.
Given a change in redox conditions, predict how chromium species will shift between Cr 3+ and Cr 6+. What implications does this change have for aquatic systems?
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Think about how oxidation states impact solubility.
Question 6.
Design an experiment to evaluate the bioavailability of a new organic contaminant in an aquatic ecosystem. What factors would you consider?
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Consider the interactions in aquatic systems.

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