Lab Report #8 CHM 240.doc - Buonocore 1 Christopher Buonocore 15 April 2013 Potentiometric Titration of Hydrogen Peroxide Buonocore 2 Abstract The

Lab Report #8 CHM 240.doc - Buonocore 1 Christopher...

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Buonocore 1 Christopher Buonocore 15 April 2013 Potentiometric Titration of Hydrogen Peroxide
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Buonocore 2 Abstract The average volume of potassium permanganate at the equivalence point was determined to be 23.4 ml through potentiometric titration. Potentiometric titration is similar to an acid base titration in which it produces an equivalence point. However, instead of using a pH sensor an ORP sensor is utilized. Consequently, the determination of the equivalence point allowed for the calculation of the molar concentration of hydrogen peroxide. The average molar concentration was calculated to be 0.119 M. Introduction To determine the concentration of a hydrogen peroxide solution, potentiometric titration was used. The potentiometric titration of hydrogen peroxide requires the titrant potassium permanganate. Furthermore, the reaction of hydrogen peroxide and potassium permanganate is an oxidation-reduction reaction. Consequently, an Oxidation-Reduction Potential sensor can be used to determine the equivalence point of the titration. As a result, the concentration of hydrogen peroxide can be calculated from the stoichiometric
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