When the Cu²+ concentration is 9.20×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 0.987V. What is the Cr³+ concentration? 3Cu²+(aq) + 2Cr(s)—3Cu(s) + 2Cr³+(aq) Answer: M
When the Cu²+ concentration is 9.20×10-4 M, the observed cell potential at 298K for an electrochemical cell with the following reaction is 0.987V. What is the Cr³+ concentration? 3Cu²+(aq) + 2Cr(s)—3Cu(s) + 2Cr³+(aq) Answer: M
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter17: Electrochemistry
Section: Chapter Questions
Problem 98QAP: Which of the changes below will increase the voltage of the following cell?...
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Transcribed Image Text:When the Cu²+ concentration is 9.20×10-4 M, the observed cell potential at 298K
for an electrochemical cell with the following reaction is 0.987V. What is the Cr³+
concentration?
3Cu²+ (aq) + 2Cr(s) 3Cu(s) + 2Cr³+ (aq)
Answer:
M
![2+
When the Cu²+ concentration is 1.26 M, the observed cell potential at 298 K for an
electrochemical cell with the following reaction is 2.815 V. What is the Mg²+
concentration?
Cu²+ (aq) + Mg(s) → Cu(s) + Mg²+ (aq)
2+
Cu²+ (aq) + 2e¯ → Cu(s) Fre
red
= 0.337 V
2+
Mg²+ (aq) + 2e¯¯ → Mg(s) E -2.370 V
red
[Mg²+] = [
M
=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdb3d87c9-3c7a-4527-95ca-8f02768b6dfc%2F18bd1e84-af56-4a04-9d33-ff883e6d2dc4%2Frfbtsyq_processed.png&w=3840&q=75)
Transcribed Image Text:2+
When the Cu²+ concentration is 1.26 M, the observed cell potential at 298 K for an
electrochemical cell with the following reaction is 2.815 V. What is the Mg²+
concentration?
Cu²+ (aq) + Mg(s) → Cu(s) + Mg²+ (aq)
2+
Cu²+ (aq) + 2e¯ → Cu(s) Fre
red
= 0.337 V
2+
Mg²+ (aq) + 2e¯¯ → Mg(s) E -2.370 V
red
[Mg²+] = [
M
=
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