7. Write the Q expression and Nernst equation representing the following reactions: (a) Mg(s) + Sn2+ (aq) → Mg2+ (aq) + Sn(s) (b) 2Cr(s) + 3Pb2+ (aq) → 2Cr³+ (aq) + 3Pb(s)
7. Write the Q expression and Nernst equation representing the following reactions: (a) Mg(s) + Sn2+ (aq) → Mg2+ (aq) + Sn(s) (b) 2Cr(s) + 3Pb2+ (aq) → 2Cr³+ (aq) + 3Pb(s)
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
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Chapter19: Electrochemistry
Section: Chapter Questions
Problem 19.150QP
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Answer no. 7
![7. Write the Q expression and Nernst equation representing the following reactions:
(a) Mg(s) + Sn²+ (aq) → Mg²+(aq) + Sn(s)
(b) 2Cr(s) + 3Pb²+ (aq) → 2Cr³+ (aq) + 3Pb(s)
8. Calculate Eº, E, and AG for the following cell reactions:
(a) Mg(s) + Sn²+ (aq) → Mg²+ (aq) + Sn(s) if [Mg²+] = 0.045M and [Sn²+] = 0.035M
(b) 3Zn(s) + 2Cr³+ (aq) → 3Zn²+ (aq) + 2Cr(s) if [Cr³+] = 0.010M and [Zn²+] = 0.0085M](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F63406890-4aac-421a-83a1-cd3d874a2a1f%2F3614d7e2-9d12-44b0-be06-26cc9860a712%2Ffch3duj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:7. Write the Q expression and Nernst equation representing the following reactions:
(a) Mg(s) + Sn²+ (aq) → Mg²+(aq) + Sn(s)
(b) 2Cr(s) + 3Pb²+ (aq) → 2Cr³+ (aq) + 3Pb(s)
8. Calculate Eº, E, and AG for the following cell reactions:
(a) Mg(s) + Sn²+ (aq) → Mg²+ (aq) + Sn(s) if [Mg²+] = 0.045M and [Sn²+] = 0.035M
(b) 3Zn(s) + 2Cr³+ (aq) → 3Zn²+ (aq) + 2Cr(s) if [Cr³+] = 0.010M and [Zn²+] = 0.0085M
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