General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter19: Electrochemistry
Section: Chapter Questions
Problem 19.101QP: Balance the following skeleton equations. The reactions occur in acidic or basic aqueous solution,...
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![Balance each redox reaction occurring in acidic aqueous
solution.
b. Mg(s) + Cr"(aq)
Mg"(aq) + Cr(s)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb6e6da82-f0f4-4881-ab84-98062460ae42%2Fd8f1d432-75b0-4549-9396-1db79e060565%2Fz4ugz8l.png&w=3840&q=75)
Transcribed Image Text:Balance each redox reaction occurring in acidic aqueous
solution.
b. Mg(s) + Cr"(aq)
Mg"(aq) + Cr(s)
Expert Solution
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Step 1
We have following redox reaction
Mg (s) + Cr+3 (aq) → Mg+2 (aq)+ Cr(s)
Step 1:
Separate the overall reaction into two half reactions: One for oxidation and one for reduction.
Oxidation: Mg(s) --> Mg+2 (aq)
Reduction: Cr+3 (aq) --> Cr(s)
In these half reactions all elements are balanced. Hence in the next step we need to balance the charge.
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