Experiment 26 - Kayla Peterpaul Partner: Amanda Javier...

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Kayla PeterpaulPartner: Amanda JavierTitration Curve of Polyprotic Acids2 April 2018CHEM1204.31Dr. Jia MaChemistry DepartmentFairleigh Dickinson UniversityAbstractIn this experiment, the acid dissociation constant and molarity of an unknown acid were determined by titration. This was accomplished by using the titration curve based on the data. Then, from this information, the pH and identity of the unknown acid were determined. The pH of the acid was determined to be 2.94, which is closest to the pH carbamodithioic acid according to the CRC Handbook of Chemistry and Physics.Experimental Apparatus:pH meter with electrodes100 mL beakers (3)600 mL beaker25 mL pipetHot plate Corning PC 420D SN: 1535153352201 50 mL beakerBuret, buret clamp, and ring standPage 1 of 6 Experiment 26
Chemicals:Buffer solution pH= 4.0 CAS: 127-09-30.1 M NaOH or 19 M NaOH CAS:1310-73-2Unknown solution of polyprotic acid (approximately 0.1 M solution)Potassium hydrogen phthalate (KHP) CAS: 877-24-7Phenolphthalein indicator solution CAS: 77-09-8Procedure: Three separate 25.00 mL aliquots of the unknown acid were delivered into three separate

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Term
Spring
Professor
Jia Mah
Tags
Chemistry, Molarity, pH, Handbook of Chemistry and Physics

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