2. Considering your response to Question 1, as well as other data in your table from Part 1 and 2, describe how [Zn] affects cell potential. Then describe how [Cu] affects cell potential. katiel is low, the

Principles of Instrumental Analysis
7th Edition
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Chapter23: Potentiometry
Section: Chapter Questions
Problem 23.14QAP
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Please explain Q2 from Post lab questions.

Part 3
Standard Reduction
Potential of IM Cu" /
Cu
Standard Reduction
Potential of IM Zn/
Zn
Standard Potential of
Cell
Theoretical Value
0.337
-0.7618
EIIV
Measured Cell Potential
Cell Temperature
Concentration of Zn²
Solution
Concentration of Cu
Solution (Show calculations)
Measured Value
1.07
22.5°C
295.7 15
0-10M
Post-lab Questions:
(No additional discussion required)
I. A. Which of your trials from Part 1 or Part 2 gave the highest cell potential? Write the concentrations
and value of E here. B. Which gave the lowest cell potential? Write the results here.
Highest E= 1.21
Lowest E= 1.05
[Zn"]
[Zn¹"]
[Cu] = IM
[Cu]=0.025 H
2. Considering your response to Question 1, as well as other data in your table from Part 1 and 2,
describe how [Zn³] affects cell potential. Then describe how [Cu] affects cell potential.
station is low, the
Transcribed Image Text:Part 3 Standard Reduction Potential of IM Cu" / Cu Standard Reduction Potential of IM Zn/ Zn Standard Potential of Cell Theoretical Value 0.337 -0.7618 EIIV Measured Cell Potential Cell Temperature Concentration of Zn² Solution Concentration of Cu Solution (Show calculations) Measured Value 1.07 22.5°C 295.7 15 0-10M Post-lab Questions: (No additional discussion required) I. A. Which of your trials from Part 1 or Part 2 gave the highest cell potential? Write the concentrations and value of E here. B. Which gave the lowest cell potential? Write the results here. Highest E= 1.21 Lowest E= 1.05 [Zn"] [Zn¹"] [Cu] = IM [Cu]=0.025 H 2. Considering your response to Question 1, as well as other data in your table from Part 1 and 2, describe how [Zn³] affects cell potential. Then describe how [Cu] affects cell potential. station is low, the
Data Sheet for Electrochemical
Part 1
[CUSO4].
Molarity
[ZnSO4].
Molarity
Measured
cell
potential, V
Temperature,
Temperature,
°C
K
IM
Activity
Part 2,
Trial 1
0-10M
Part 2,
Trial 2
0-10M
Instructor Approval of Part 1 voltage measurement:
Part 2,
Part 2,
Trial 4
Trial 6
00254 0.025 0.025-1
Part 2,
Trial 3
IM
Part 2,
Trial 5
IM 10M 0.10 M 0.10 M 0.10M IM
421
1.18 1.12
1.08
1.06 1.05 1-07
22.7
22.9 22 5
22.5 22.5
22.2 21.4
295.8 296-1 245.5 295-7 215.6 245.4 294.6
040M
Part 2,
Trial 7
Transcribed Image Text:Data Sheet for Electrochemical Part 1 [CUSO4]. Molarity [ZnSO4]. Molarity Measured cell potential, V Temperature, Temperature, °C K IM Activity Part 2, Trial 1 0-10M Part 2, Trial 2 0-10M Instructor Approval of Part 1 voltage measurement: Part 2, Part 2, Trial 4 Trial 6 00254 0.025 0.025-1 Part 2, Trial 3 IM Part 2, Trial 5 IM 10M 0.10 M 0.10 M 0.10M IM 421 1.18 1.12 1.08 1.06 1.05 1-07 22.7 22.9 22 5 22.5 22.5 22.2 21.4 295.8 296-1 245.5 295-7 215.6 245.4 294.6 040M Part 2, Trial 7
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