2CLabManual201303

The nernst equation for the cell potential of cells 3

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Unformatted text preview: f the following is the correct expression for Q, the reaction quotient in the Nernst equation: Three choices will be given Part II Analysis. The Nernst equation for the cell potential of cells #3, #5, & #6, is Ecell = Eocell - (0.0257/2)ln((Q previous question). What is the expression, then, for the cell voltage difference between cells #5 and #3, Ecell#5 - Ecell#3? Three choices will be given Using the ion concentration values in cells #3 & #5 in the expression obtained from the previous question, calculate the theoretical cell voltage difference between cells #5 and #3. Using the ion concentration values in cells #3 & #6 and the expression for Ecell#6 - Ecell#3, calculate the theoretical cell voltage difference between cells #6 and #3. Part III. In this experiment what you have really done is prepare a concentration cell with drastically different concentrations of the Pb2+ ion in the two halves of the cell. Use the Nernst equation and the measured cell voltage to estimate the Pb2+ ion concentration in the compartment containing the lead sulfate slur...
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This note was uploaded on 04/09/2013 for the course CHE CHE 2C taught by Professor Nasiri during the Spring '07 term at UC Davis.

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