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4. Consider the following: Zn²+2e-→ Zn The wire -0.76 V Cr²+2e-→ Cr -0.91 V How many coulombs were expended in the reaction? (a) 2 (b) 4 (c) 96500 OBAH nodoses or (d) 193000

4. Consider the following: Zn²+2e-→ Zn The wire -0.76 V Cr²+2e-→ Cr -0.91 V How many coulombs were expended in the reaction? (a) 2 (b) 4 (c) 96500 OBAH nodoses or (d) 193000

Chemistry
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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**Question 4: Analyze the Following Electrochemical Reactions** Consider the reactions given below: 1. \( \text{Zn}^{2+} + 2e^- \rightarrow \text{Zn} \) with a potential of \(-0.76 \, \text{V}\) 2. \( \text{Cr}^{3+} + 2e^- \rightarrow \text{Cr} \) with a potential of \(-0.91 \, \text{V}\) **Question:** How many coulombs were expended in the reaction? **Options:** (a) 2 (b) 4 (c) 96500 (d) 193000 **Discussion:** The problem presents two electrochemical half-reactions along with their respective standard reduction potentials. The task is to determine the amount of electric charge, in coulombs, expended during the reaction. Options listed include values representing possible charges based on electron transfer calculations in typical electrochemical processes.
Transcribed Image Text:**Question 4: Analyze the Following Electrochemical Reactions** Consider the reactions given below: 1. \( \text{Zn}^{2+} + 2e^- \rightarrow \text{Zn} \) with a potential of \(-0.76 \, \text{V}\) 2. \( \text{Cr}^{3+} + 2e^- \rightarrow \text{Cr} \) with a potential of \(-0.91 \, \text{V}\) **Question:** How many coulombs were expended in the reaction? **Options:** (a) 2 (b) 4 (c) 96500 (d) 193000 **Discussion:** The problem presents two electrochemical half-reactions along with their respective standard reduction potentials. The task is to determine the amount of electric charge, in coulombs, expended during the reaction. Options listed include values representing possible charges based on electron transfer calculations in typical electrochemical processes.
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