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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.
 Spring '07
 Nasiri
 Chemistry

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