Lab Report (5) sodium ydroxide.docx - Lab Report Name...

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Lab ReportName: Sandra ChairesDate:2/28/17Title of Experiment: Standardizing A Sodium hydroxide SolutionPurpose:The purpose is to standardize a sodium hydroxide solution by using it to titrate a solution of potassium hydrogen phthalate.Materials:BuretBuret stand and clamp250-mL Erlenmeyer flask (2)FunnelWaste beaker, 250-mLGraduated cylinderKHP (s)NaOH, stock solutionPhenolphthalein indicatorBackground:According to our Chem 1a Lab Manual,Volumetric analysis is the analytical procedure used to determine the concentration of an unknown in a solution. To perform volumetric analysis, we use the technique titration there are two types of titrations, standardization and determine the concentration of an unknown. During the titrations one of the solutions must be known concentrations in order to calculate the concentration of another.Procedure:Prepare the NaOH for Standardization1. Determine the concentration of the stock NaOH solution. Calculate how much stock NaOHneeded to make 500 mL of a 0.100 M NaOH solution using M 1V1= M 2V2.a. Note: NaOH is not a good standard so you will need to standardize the NaOH solutionmade using KHP. You should be close to 0.100 M NaOH.

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