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Colorimetry to find out formula of a transition metal complex watch

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    Hi, please could someone outline colorimetry as I'm really confused. Also, what exactly is the filter used for? Thanks
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    (Original post by candyhearts)
    Hi, please could someone outline colorimetry as I'm really confused. Also, what exactly is the filter used for? Thanks
    The filter only allows a certain band of frequencies to pass. These will then be absorbed by the species under investigation.

    The absorption of light follows the Beer-Lambert law, which basically says that the absorbance is proportional to the concentration and the path length.

    If a series of solutions of known concentration are used and their absorbance plotted against concentration (a calibration curve) then the unknown solution can be measured and its concentration read off from the calibration curve.
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    (Original post by charco)
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    Thank you
 
 
 
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