Practice Recovery Efficiency (4.2.1) - Analyte Losses in Chemical Analysis

Practice: Recovery Efficiency

Lesson 4.2.1Analyte Losses in Chemical Analysis

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10 questions

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Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What process leads to the loss of analytes through evaporation?
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Think about some common household processes!
Question 2.
Define recovery efficiency in your own words.
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Consider it as a percentage!
3Question 3.
What is the term for the loss of analytes due to evaporation?
- Adsorption
- Volatilization
- Reaction
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Consider the state change from liquid to gas.
4Question 4.
True or False: Recovery efficiency is a measurement of the percentage of analyte that remains in a sample after processing.
- True
- False
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Think about how we define the term in percentage.
Question 5.
An environmental lab measures a water sample with an original concentration of a harmful chemical. After processing, the lab finds only 50 mg/L instead of the reported 100 mg/L. Calculate the recovery efficiency and discuss the implications.
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Repeat the recovery efficiency calculation!
Question 6.
A lab uses two different types of containers for storage: glass and plastic. Explain the potential impacts of each on recovery efficiency concerning adsorption and present a comparison-based scenario.
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Think about how different materials interact with chemicals!

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