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lab report 2 - E xperiment 2A tomic Spectroscopy Lab Report...

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Experiment 2- Atomic Spectroscopy Lab Report # 2 Rubeshan Sathananthan 100371055 Kevin 2/23/2010 1 | P a g e
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Atomic Emission Spectra Part I—Calibration of Spectroscope Colour Wavelength Scale Position Yellow 579.0 6 Green 546.1 5.5 Blue 435.8 5 Violet 404.7 4.5 Part II—Hydrogen Spectrum Line of linear regression from part 1 y = 126.64x - 173.46 Colour Scale Reading Wavelength Violet 4 333.100 Bluish-Green 5 459.740 Yellow 5.75 554.7200 Red 6.75 681.3600 3 | P a g e
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Colour Scale λnm λcm n 1 n 2 Rydberg Constant (cm -1 ) % error Violet 4 333.100 3.331*10 -5 2 7 1.307581974E5 19.15597966 Bluish -Green 5 459.740 4.5974*10 -5 2 6 97881.41128 10.80363844 Yellow 5.75 554.7200 5.5472*10 -5 2 5 85843.39418 21.77351834 Red 6.75 681.3600 6.8136*10 -5 2 4 78274.82290 28.6705278 Part I I I—Spectra of Cations KCl Yellow/Orange 6 LiCl Red 7 Cacl2 Redish orange 5.8 Nacl Yellow 5.8 Unkown -5 Purple 4.5 Part IV—Fluorescent and Incandescent lamps i) Fluorescent lamp: Scale Reading Colour 4.5 Violet 5.0 Bluish Green 5.0 Grass Green 5.9 Brown 6.1 Red 4 | P a g e
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ii) Incandescent lamp: The light emitted by the incandescent lamp does not produce exact colours or scale numbers, but it results in a wide range of visible colours on the spectroscope.
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