Spectra of Conjugated Dyes & Beer's Law Overview Getting Started Techniques Procedure FAQ Full Lab Manual Introduction & Goals Chemistry & Background Key Questions Prelab Problems Safety Procedure In Your Write-up Experiments Index ChemLab Home		Key questions Here are some questions to ask yourself before, during, and after your experiment this week. What makes a red solution, like cherry Koolaid, appear red to your eye? What colors of light are absorbed and what colors are transmitted? How are absorbance and transmission spectra related? What is the scanning spectrometer doing, when it measures the spectrum of a solution? What steps must it automate from the procedure you used to measure a "point-by-point" spectrum with a Spec 20? What are the approximations made in applying the particle-in-a-box model to the electron energy levels of conjugated dyes? How well do these approximations work?
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