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Standardization of NaOH and Analysis of Unknown Acid Sample.
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Alex Kaplan 20135364 29-SEPT-2003 IB Chemistry II Lab Report: Standardization of NaOH and Analysis of Unknown Acid Sample Introduction: Titration is a process that involves measuring the exact volume of a solution with a known concentration and reacting the solution with a measured volume of a solution with an unknown concentration, or with a weighed sample of a solid. The solution with a known concentration is called the standard solution. To standardize sodium hydroxide (NaOH), one must first test the actual concentration of it, because NaOH is usually of questionable purity. Once the NaOH is standardized using the help of the potassium hydrogen phthalate (KHP) indicator through titration, the NaOH can then be used to determine the identity of an unknown acid sample. The indicator dye will turn pink when the solution suddenly becomes a base (indicating that enough of the titrant has been dripped into the solution to cause this reaction), and the amount of NaOH...
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