CHM 1311 Study Guide - Quiz Guide: Calibration Curve, Cuvette, Spectrophotometry
25 Dec 2015
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In this experiment, a solution of naoh was added to a solution of fecl3 and the. Discussion ph of the resulting solution was measured. The calibration curve was then used to find the concentration of fe3+ ions in the supernatant solution by plotting the experimental a value for the supernatant solutions onto the curve and interpolating. When the concentration of oh- ions and concentration of fe3+ ions were found, the ksp value was found using the equation ksp = [fe3+ ][oh-]3 . In trial 1 for the calculation of ksp of fe(oh)3 , the experimental value for ksp was found to be 7. 6 * 10-37 and for trial 2, the ksp was calculated to be 7. 9 * 10-37 . Overall, the percent error was determined to be 2 * 103 %. The relatively high percent error was attributed to several sources of error.
