Lab report 8

Lab report 8 - was required to determine neutralization In...

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Oxidation-Reduction Recations of the Halogens (Lab #8) Jesse LaSalle TA: Jimmy Martin Experiment Completed: November 8, 2007 Report Submitted: November 15, 2007
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I) Purpose : Observation of oxidation-reduction reactions of halogens. Using those observations in the identification of a halogen-containing anion. II) Procedure : Casey, J. and R. Tatz (2008). Oxidation-Reduction Reactions of the Halogens. . General Chemistry Laboratory Experiments , Hayden McNeil. Vol.1: 73-88. III) Data : (See attached report form.) IV) Calculations : (None.) V) Error analysis/Conclusion: This laboratory experiment’s procedure had a number of possible sources of error. Any measurement recorded in any part of the experiment could have been misread because of human error. For the titration, I had a very difficult time cleaning the buret, and there is a possibility of the device not being completely clean before use. Any contamination could cause an inaccurate result while titrating. I had to restart several titrations, as I had overshot the faint pink color that
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Unformatted text preview: was required to determine neutralization. In Part B, I was instructed to use between 0.20 and 0.22g of my unknown acid, however, not all of the acid would dissolve. This experiment gave experience in doing a titration, as well as using a standard solution to find the molecular weight of an acid. In Part A, my NaOH solution was standardized and had an average molarity of 0.09835M. Using this calculated molarity, I was able to determine the number of moles of NaOH used in Part B. Because the reaction was an Acid-Base reaction, the number of moles of NaOH was equal to the number of moles of the acid. Knowing the mass of the unkown acid sample used, and the number of moles used, the molecular weight was able to be calculated. My experiment found the average molecular weight of my acid to be 153.26 g/mol. VI) Questions: 2) BrO-, HClO 4 , IO-5a) Iodide anion....
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Lab report 8 - was required to determine neutralization In...

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