acid base titration experiment - Acid-Base Titration...

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Acid-Base Titration ExperimentHoa ChungChemistry 1A Spring2016, March 28, 2016Objective/PurposeThe experiment involves two steps: First, to standardize a solution of sodiumhydroxide by titration with a primary standard, potassium hydrogen phthalate (KHC8H4O4);second, to find percent acetic acid in commercial vinegar.TheoreticalPart A: Standardization of NaOH solutionThe acid and base titrations used the Arrhenius theory.This theory stated that acid aresubstance which produce hydrogen ions in solution and bases are substance which producehydroxide ion in solution.NaOH + KHC8H4O4NaKC8H4O4+ H2OIn titration, standard solutions are now usually expressed in terms of molarity, M.Molarity, M =moles of solute/volume of solutions in litersPart B: Finding percent acetic acid in commercial vinegarPercent (%) acetic acid in vinegar is defined as:massof aceticacid(g)massof vinegar(g)x100=acetic acidvinegarWe also need:Average=x1+x2+x33Range=W=(xlargestxsmallest)

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Tags
Molarity, Sodium hydroxide, Erlenmeyer flask, KHP

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