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Unformatted text preview: Part 2: Concentration effects and the Nernst equation. In part 2 of this experiment we were asked to use different concentrations of Lead nitrate and Copper nitrate to find the cell voltage through measurement and calulations. We used the reaction Pb(s) + Cu2+(aq) à Pb2+(aq) + Cu(s). We constructed an electro chemical cell using the same materials as in part 1. We changed the concentration of the lead solutions .1M Pb(NO3)2 for the first part and the copper solution to .1M Cu(NO3)2 for the second part. Our measured cell voltage for bothe solution at 1M was .505 V. For .1M Pb(NO3)2 and 1M Cu(NO3)2 the voltage was .525 V. And for the 1M Pb(NO3)2 and .1MCu(NO3)2 the voltage was .465 V. Our calculated voltages were .47 V, .499 V and . 44 V. These voltages were very accurate compared to our measured voltages so I do not see much error....
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This note was uploaded on 04/20/2010 for the course CHEM 1A/ 1 Chem Lab taught by Professor Van koppen during the Spring '10 term at UCSB.
- Spring '10
- Van Koppen