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Unformatted text preview: The amount of Fe3+ was constant in this equation, and it was 9.09*10^4. However, we used the equation y=770.99x.0056 and used the measured absorption in part 2 as y in order to find x. This x is the number we used as the FeSCN2+ in the K equation. Once we found K, we took logK in order to find Pk, and thus we finished all of our calculations. However, we think that the spectrophotometer may have errored in its reading, because when we redid the test some results varied, and if the amount of absorption is off, it is pretty evident that the rest of the experiment would be thrown off since it all depends initially on the measure of absorption....
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 Fall '07
 Hooker
 pH

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