lab 10 in lab

lab 10 in lab - Data Table A. Cell Potentials vs a Zn2+/Zn...

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Data Table A. Cell Potentials vs a Zn 2+ /Zn (0.1 M) Couple Half-Cell Potential Difference, mV Ag 1+ /Ag (0.1 M) 1.1800 1.18 Ag 1+ /Ag (0.1 M) * -1.1989 -1.2 Pb 2+ /Pb (0.1 M) .2926 0.293 Cu 2+ /Cu (0.1 M) .7952 0.795 * Leads switched Question 1. In your first measurement since the Zn 2+ /Zn (0.1 M) redox couple is the reference, does your test Ag 1+/ /Ag (0.1 M) redox couple have a more positive or more negative reduction potential than zinc? more positive more negative Quesiton 2a. Given your response to Question 1, which half-cell is the anode? zinc half-cell silver half-cell Question 2b. Select all of the following that are true about your Zn-Ag cell.
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Ag is getting oxidized electrons travel toward the Ag half-cell Ag is losing electrons electrons travel away from the Zn half-cell Zn 2+ is getting reduced Zn is getting oxidized Ag 1+ is getting reduced Ag 1+ is gaining electrons Zn is losing electrons electrons travel toward the Zn half-cell electrons travel away from the Ag half-cell Zn 2+ is gaining electrons Question 3. In your second measurement, how does the voltage differ from the first measurement? the voltage is half the original value the voltage is the same the voltage is equal in magnitude but opposite in sign the voltage is twice the original value the voltage is twice the original value and opposite in sign
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This note was uploaded on 03/18/2011 for the course CHEM 202 taught by Professor Feducia during the Spring '09 term at N.C. State.

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lab 10 in lab - Data Table A. Cell Potentials vs a Zn2+/Zn...

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