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2 cards from this section. Quick, good the night before a test.
What is the electromagnetic spectrum?
Think of the different waves you encounter daily.
Describe what Beer’s Law states.
Remember the relationship between absorbance and concentration.
What is the main purpose of UV-Visible spectroscopy?
Think about the colors you see in solutions.
True or False: The fingerprint region in IR spectroscopy is unique to each compound.
Consider how each molecule has its characteristic 'fingerprint' in the spectrum.
A student measures the absorbance of a series of dye solutions and finds an absorbance of 0.650 with a path length of 1 cm. If the molar absorptivity is found to be 150 L mol⁻¹ cm⁻¹, what is the concentration of the dye in mol/L?
Apply the formula directly.
Discuss the implication of using a sample that exceeds an absorbance of 2.0 in UV-Visible spectroscopy. What might happen and how could you adjust your measurements?
Think about how too much light might not be accurately measured.
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