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Lab #5 - Optical Spectroscopy

Lab #5 - Optical Spectroscopy - Optical Spectroscopy by...

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Optical Spectroscopy by Erin Samplin Lab Instructor: Xiaoxiao Li October 23, 2007
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Purpose Determine the composition of an unknown solution containing two or more ionic salts on the basis of its emission spectra. Create a partial energy-level diagram for hydrogen. Results and Discussion Emission spectra of fluorescent light, incandescent light, and a helium spectra were observed and recorded. Then, emission spectra of NaCl, LiCl, KCl, CaCl 2 , and SrCl 2 were observed and recorded by holding the tip of a cotton swab soaked in each solution in a Bunsen burner and taking a picture with the OO1Base32 computer program. Ionic Salt Color of Flame NaCl Bright Yellow/Orange LiCl Fuschia KCl Pink/Peach CaCl 2 Orange SrCl 2 Red/Orange Prior to examining an unknown sample, the procedure to determine its composition was carried out on a mixture of known composition. Samples of KCl and CaCl 2 were combined in a test tube. The emission spectrum of the sample was observed and
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