Practice - Calibration Curve for UV-Vis Spectroscopy
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Practice Questions
Test your understanding with targeted questions
What is a calibration curve?
💡 Hint: Think about how light absorption relates to concentration.
What does molar absorptivity (ε) represent?
💡 Hint: Consider the unit L mol⁻¹ cm⁻¹.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a calibration curve plot?
💡 Hint: Consider the relationship between light absorption and concentration.
True or False: Molar absorptivity is constant for all concentrations.
💡 Hint: Think about how absorption might change at higher concentrations.
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Challenge Problems
Push your limits with advanced challenges
If you prepared a calibration curve with the following concentrations and measured absorbances: 1.00 mg/L (0.102), 2.00 mg/L (0.204), 6.00 mg/L (0.610), and 8.00 mg/L (0.812). Using a linear regression fit, what is the derived equation, and how would you calculate the concentration of an unknown with an absorbance of 0.550?
💡 Hint: Use the slope from your calculations to find the unknown concentration.
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