Practice Regulatory Considerations For Mass Balance (5.3) - Soil-Air Partition Constants

Practice: Regulatory Considerations for Mass Balance

Lesson 5.3Soil-Air Partition Constants

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9 questions

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6 sample questions

Question 1.
Define mass balance in the context of environmental chemistry.
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Remember, mass cannot be created or destroyed.
Question 2.
What is a partitioning constant?
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Think of it like a ratio!
3Question 3.
What does mass balance imply in environmental engineering?
- A. Mass can be created
- B. Mass must remain constant
- C. Mass can be destroyed
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Reflect on conservation principles in physics.
4Question 4.
True or False: If a chemical exceeds its solubility limit, it cannot exist in water.
- True
- False
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Think about how solids interact with liquids.
Question 5.
Calculate the mass balance of a scenario where 200 kg of a contaminant is introduced in a body of water. Given the solubility of the contaminant is 50 mg/L and its partitioning constant with air is 0.5. How much will remain undissolved if the mass of water in the system is 1000 L?
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Calculate the maximum based on given volume and solubility first.
Question 6.
In a simulated spill, a chemical spills and partitions between air and water. If the partitioning constant is 10 (favoring water), and the initial concentration in water is estimated to be 300 mg/L, what might you predict about the air phase concentration?
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Refer to the definition of partitioning for the estimate.

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