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Acid and Base TitrationsPurpose and IntroThe purpose of a titration is to determine the concentration of a known volume ofsolution of a known substance. Titrations often involve using acids, bases, indicatorsolutions, pH meters, and volumetric glassware. In this experiment, a titration was usedto standardize a NaOH solution. In a second titration, the standardized NaOH solutionwas used to determine the previously unknown concentration of an HCl solution.Because the solutions made in this experiment will influence the results of next week’sSoda-ash experiment, the exact concentrations needed to be determined throughstandardization. Standardizing a solution an be done by running a titration with what isknown as a primary standard, or a substance of known stoichiometry, knowncomposition, and high purity. The exact concentration of the NaOH stock solution wasdetermined through the use of primary standard potassium acid phthalate, or KHP. Oncethe molarity of the NaOH was determined, it was used in a titration to determine themolarity of the HCl stock solution.ProcedureStandardization of NaOH1.Calculate volume of 3M NaOH needed to produce 500mL of 0.1M NaOH solution2.Measure out 0.4-0.5 grams of KHP and place in a 250mL Erlenmeyer flask