Lab Report - Exp. 4

Lab Report - Exp. 4 - AceticAcidinVinegar AmyD.Linkous1...

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Acetic Acid in Vinegar Amy D. Linkous 1 Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061 Submitted on September 25, 2007 A solution of sodium hydroxide was standardized using 99.97% potassium hydrogen phthalate and then used to titrate a diluted solution of vinegar of unknown molarity. This made it possible to find the molarity of the vinegar along with the mass percent of acetic acid in the vinegar. Introduction This experiment had two parts to it. In the first NaOH was titrated and in the second the same NaOH was used to find the molarity and acetic acid content of an unknown sample of vinegar. Experimental Procedure Three samples of potassium hydrogen phthalate (abbreviated KHP) weighing between 0.4000 and 0.6000 grams each were placed into 125 or 250 milliliter Erlenmeyer flasks and dissolved in 50 milliliters of water. These were then set aside for titration. NaOH of approximately 0.1 molarity was provided. Each student took 300 milliliters of this solution, covered it with
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Lab Report - Exp. 4 - AceticAcidinVinegar AmyD.Linkous1...

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