Avg Number - Petit-Phar 1 Vanessa Petit-Phar Lab Partners...

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Petit-Phar 1 Vanessa Petit-Phar Lab Partners Tamika Salmon and Jemima LeCorps Date of Experiment: April 15, 2008 Professor: Dr. Reza Razeghifard Teaching Assistant: Jessica Blanco Electrolytic Cell, Avogadro’s Number Abstract In order to fulfill the objectives to identify the reactions occurring at the anode and cathode during the electrolysis of various aqueous salt solutions and to determine Avogadro’s number and the Faraday constant, the following experiment was conducted. The hypothesis of the experiment was that the Avogadro’s number would be successfully calculated with a low error percentage. The value of the Avogadro’s number was determined to be 8.24 1015. With a percent error of -99.9%. The hypothesis was rejected.
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Petit-Phar 2 Electrolysis is defined as the use electrical energy to cause a chemical reaction to occur. These processes although minute, sustain life. Electrolysis processes can be found in the production of industrial goods. An electrolytic cell is an apparatus used for an electrolysis reaction. In an electrolytic cell, the input of an electric causes an otherwise nonspontaneous oxidation-reduction reaction, a nonspontaneous transfer of electrons, to occur. Unlike the galvanic cell, the anode is the site of oxidation is the positive electrode and the cathode is the site of the reduction and is the negative electrode. The number of reduction and oxidation reactions is not limited to one. When two or more of these reactions occur at the same time, the reaction with the higher reduction or oxidation potential occurs first. The purposes of the experiment were to identify the reactions occurring at the anode and cathode during the electrolysis of various aqueous salt solutions and to determine Avogadro’s number and the Faraday constant. The hypothesis stated for this experiment was the Avogadro’s number of the redox reaction can be determined if the cathode and anodes are correct. Materials and Methods For materials and methods, consult lab manual, Laboratory Manual for Principles of General Chemistry. J.A. Beran (2000). The deviations from the stated procedures are the following. Part A of the experimental procedures were omitted. For duration of 15 minutes, the current was recorded at 1 minute intervals. Lastly, only one trial of the experiment was conducted as opposed to the suggested two.
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This note was uploaded on 05/20/2008 for the course CHEM 2310 taught by Professor Reza during the Winter '08 term at Nova Southeastern University.

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Avg Number - Petit-Phar 1 Vanessa Petit-Phar Lab Partners...

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