Discussion 4

Discussion 4 - In this experiment, the goal was to observe...

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In this experiment, the goal was to observe how spectroscopy works and how it can be used to identify and measure organic and inorganic compounds. In the first part, we first adjusted the wavelength of the spectrometer to observe how certain wavelengths in the visible spectrum will produce various colors. For example, when the wavelength was set to 650 nm, the color of white light that was filtered out by the spectrometer as monochromatic light was red because in the visible spectrum, a wavelength of 650 nm corresponds to a color of red. Meanwhile, when the wavelength was decreased to 440nm, the color observed was a dark purple. In this first part, our goal was achieved in determining how a spectrometer functions. When we adjust the wavelength, the spectrometer adjusts the monochromatic light that is shined on the cuvette. Therefore, different colors and shades of light show up when the wavelength is changed. In part 2, we used spectroscopy to determine the maximum wavelength of absorption for the [Fe(SCN)] 2+ complex. This is important because by using the maximum wavelength later on in part 3, our relative error can be reduced when calculating the concentration of Fe(III) in a vitamin tablet. From measuring the absorption at various wavelengths, from 600-390 nm, the
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This note was uploaded on 04/15/2008 for the course CHEM C1500 taught by Professor Hansen during the Spring '08 term at Columbia.

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Discussion 4 - In this experiment, the goal was to observe...

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