Absorbance Spectroscopy Lab Report - Jeremy Tarr Chem 121 L...

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Jeremy TarrChem 121 LAndrew Chan19 November, 2017Absorbance Spectroscopy and Beer’s LawII. The aim of this lab was to determine the concentration of cupric ions in a solution by extrapolating from a graph of the absorbance spectroscopies of several solutions of known concentration. These measurements were taken with an intimidating machine of vague origins, the operation of which was unclear prior to entering the lab.III. As observed in the previous lab, electrons eject photons when going from an excited energy level to an unexcited one. A problem arises when attempting to observe the emission spectroscopy of a particle in a solution, because the photons ejected from the particles will get mixed up with those from the solvent. Thus, rather than observing the photons ejected, it is simpler to observe the photons absorbed by the sample.IV. Observations made in the lab are as follows:-Cupric Sulfate Pentahydrate looks like blue sugar-Each solution appears more transparent (Less blue) than the last-

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