CHM exp report 10 - CHM 151 Experiment Report Student's...

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CHM 151 Experiment Report Student’s name : Lai Shin Zie ID : I08001607 Partner’s name : Nicholas Chai ID : I08001107 Section : 5A Lecturer’s name : Dr. Palsan A/L Sannasi @ Sannach Due date : 25 July 2008
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18 June 2008 Experiment 10 : Electrolytic Cells and Avogadro’s Number. Aim : 1.To electrolyte the aqueous salt solution and determine the reaction that happen in anode and cathode and the gas evolved. 2.To determine the Avogadro number and the Faraday constant using Faraday’s law. Procedure : Please refer to the laboratory manual page 76-77. A. Electrolysis of aqueous salt solutions. Table 10.1 Solution Electrodes Litmus Test Gas Evolved Equations for Reactions NaCl C (graphite) Blue litmus Red litmus Cl 2 gas Anode: 2Cl - → Cl 2 + 2e - Cathode: Na + + e - → Na Cell: 2Cl - + 2Na + → Cl 2 + 2Na NaBr C (graphite) Red litmus Blue litmus Br 2 gas Anode: 2Br - → Br 2 + 2e - Cathode: Na + + e - → Na Cell: 2Cl - + 2Na + → Cl 2 + 2Na KI C (graphite)
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CHM exp report 10 - CHM 151 Experiment Report Student's...

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