A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG". • The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions Eº. His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number of significant digits in each quantity is correct. Also note: for each cell, the number n of electrons transferred per redox reaction is 2. calculated quantities (Check the box next to any that are wrong.) cell n AG K 2 68. kJ/mol O 8.19 x 10 11 A 0.35 V B - 114. kJ/mol - 20 1.07 x 10 0.59 V 7 2.28 x 10 2 42. kJ/mol – 0.22 V ?
A student made measurements on some electrochemical cells and calculated three quantities: • The standard reaction free energy AG". • The equilibrium constant K at 25.0 °C. • The cell potential under standard conditions Eº. His results are listed below. Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row, if any. Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number of significant digits in each quantity is correct. Also note: for each cell, the number n of electrons transferred per redox reaction is 2. calculated quantities (Check the box next to any that are wrong.) cell n AG K 2 68. kJ/mol O 8.19 x 10 11 A 0.35 V B - 114. kJ/mol - 20 1.07 x 10 0.59 V 7 2.28 x 10 2 42. kJ/mol – 0.22 V ?
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 5QRT: Identify each statement as true or false. Rewrite each false statement to make it true. (a)...
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Transcribed Image Text:A student made measurements on some electrochemical cells and calculated three quantities:
• The standard reaction free energy AG°.
• The equilibrium constant K at 25.0 °C.
• The cell potential under standard conditions E°.
His results are listed below.
Unfortunately, the student may have made some mistakes. Examine his results carefully and tick the box next to the incorrect quantity in each row,
if
any.
Note: If there is a mistake in a row, only one of the three quantities listed is wrong. Also, you may assume the number of significant digits in each
quantity is correct.
Also note: for each cell, the number n of electrons transferred per redox reaction is 2.
calculated quantities
(Check the box next to any that are wrong.)
cell
n
aG°
E
K
11
8.19 × 10
А
2
68. kJ/ mol O
0.35 V
В
2
- 114. kJ/mol
20
1.07 x 10
0.59 V
C
2
42. kJ/mol
7
2.28 X 10
- 0.22 V
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