experiment 4 lab report

experiment 4 lab report - Reubin Sabu Partner: Gary Daigle...

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Reubin Sabu Partner: Gary Daigle Chem Lab 117-517 EXPERIMENT #4: Interaction of Light with Matter: Beer’s Law SUMMARY: The primary objective of this experiment is to determine the effects of path length, concentration, and color on the amount of light transmitted through a solution. By taking appropriate measurements of CuSO4, we were able to find the relationships by using Beer’s Law. In part A, we tried to find the effect of path length of the laser’s light by placing plastic cuvettes filled with .03 M copper sulfate solution between the light sensor and the laser. We then recorded the data of the light being illuminated by using LoggerPro. We then proceeded to adding more cuvettes one at a time and measuring their decrease in illumination and effect of path length until we had reached six cuvettes of the CuSO4 solution. The data showed that the illumination exponentially decreased for each cuvette added. In part B, we examined the influence of solution concentration on the observed light intensity. We used only one cuvette of .25 M CuSO4 solution but tried to find the effect of light intensity by diluting the solution several times to give various concentrations. We used LoggerPro to measure the different illuminations for the different molarities of the copper sulfate solution. We also measured the
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This note was uploaded on 10/09/2010 for the course CHEM CHEM 117 taught by Professor Brown during the Spring '10 term at Texas A&M.

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experiment 4 lab report - Reubin Sabu Partner: Gary Daigle...

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