Discussion E6

Discussion E6 - The values of K eq ranged from 1500-1800,...

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Robert Collins Chem 1AL Josh Kurzman Discussion In the first part of the lab we used a spectrophotometer to measure the absorbance of light of a solution of known concentration. The data we collected was the absorbance measured by the spectrophotometer, and the correlating molarity of the solution. Then, we inputted the data into excel to generate our line of calibration, which ended up having a slope(εb) of about 755. This equation was our reference for the second part of the lab. The second portion involved much more calculation. We used the calibration line to produce the concentrations measured, and used that data to calculate the equilibrium constant K.
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Unformatted text preview: The values of K eq ranged from 1500-1800, with the exception of B-1 which was 2650. This could have been due to the approximation of our method of producing Fe(SCN) 2+ . This lab immediately sent my mind wandering to some past summer days spent at the lake. I realized as a child, that the deeper I swam, the colder the water became. Now, in hindsight, it makes perfect sense. As I swam deeper, sunlight was being absorbed by the water above me. Depth correlates to the thickness(b) of the solution in this situation. Since A=bc, less light travels to larger depths of a lake because it is absorbed by the water near the surface....
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