Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Transcribed Image Text:16:37 Sun May 2
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<Problem Set #9 (Ch 19)
Exercise 19.44 - Enhanced - with Feedback and Hints
5 of 15
Catnoae
(+)
Anoae
Fe(s)
Cr(s)
Salt bridge
containing
KNO3(aq)
-1 M Fe3+
IM Cr³+
Submit
Previous Answers
Correct
Consult the table of Standard Electrode Potentials at 25° C and find the corresponding half-reactions:
Fe3+ (ag) + 3e-→Fe(s), E = -0.036 V
Cr+ (aq) + 3e-→Cr(s), E = -0.73 V
The electrode with a smaller electrode potential tends to undergo oxidation and thus is an anode. Therefore, Cr is
the anode. The electrode with a greater electrode potential tends to undergo reduction and thus is a cathode.
Therefore, Fe is the cathode.
Electrons travel from the anode to the cathode. Therefore, the direction of electron flow on the sketch is from right
to left.
Part B
Enter a balanced equation for the overall reaction.
Express your answer as a chemical equation. Identify all of the phases in your answer.
• View Available Hint(s)
ΑΣφ
?
O A chemical reaction does not occur for this question.
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Part C
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