Chapter18: Introduction To Electrochemistry
Section: Chapter Questions
Problem 18.19QAP
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Question
Im not sure how to plug in my calculated values to get the theoretical non-standard cell potential for each battery. can someine explain?
![Nonstandard Conditions
Nernst equation:
Eº: reaction potential
n: number of moles of electrons transferred
Q: reaction quotient
2 Ag* (aq)
Q=
[Prod]A
E = E°-(0.0592/n) log Q
[React]B
Zn (s)
[Zn²+]
[Ag+]²
=
2 Ag (s) + Zn²+ (aq)
(0.50)
(0.025)²
+1.562 V
E = 1.562-(0.0592/2) log 800
E = 1.562-0.096 = 1.476 V
Agus)
2 mol e
= 800](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7588948d-a8a4-4b5d-b85a-786e24f76953%2Fd3603f16-d972-48ee-9df1-d3563c2b8784%2F8tdw7rk_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Nonstandard Conditions
Nernst equation:
Eº: reaction potential
n: number of moles of electrons transferred
Q: reaction quotient
2 Ag* (aq)
Q=
[Prod]A
E = E°-(0.0592/n) log Q
[React]B
Zn (s)
[Zn²+]
[Ag+]²
=
2 Ag (s) + Zn²+ (aq)
(0.50)
(0.025)²
+1.562 V
E = 1.562-(0.0592/2) log 800
E = 1.562-0.096 = 1.476 V
Agus)
2 mol e
= 800
![Battery I
cell voltage measured
Metal Anode zinc
metal cathode: Copper (0.1M) Cu
Battery 2
cell voltage measured
metal anode
Zinc
metal cathode: copper (0.010μ) Cu
Battery 3
battery 2
cell voltage measured
0.905 V
metal anodezine (0.100 M)
metal cathode: copper (0.001) Cu
Battery 1
Standard cell potential:
E cell Ecell
+
Ecele = 0.942 +070,942
0.942 V
(0.1 m)
Ecel=
battery 3 0.905 v
Ecell
0.913 V
(0.001 μ)
=
cell = 0.913 V
0.913+0.0591 (-1.51)
= 0.824 V
0.0692 In-
= For battery 1:
[+]
[Cu²+]
n
0.001
0.905 + 0,2591 In (0,100,
2
E= E-0₁0592
A
1,04 V
la=](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7588948d-a8a4-4b5d-b85a-786e24f76953%2Fd3603f16-d972-48ee-9df1-d3563c2b8784%2Frpwmagb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Battery I
cell voltage measured
Metal Anode zinc
metal cathode: Copper (0.1M) Cu
Battery 2
cell voltage measured
metal anode
Zinc
metal cathode: copper (0.010μ) Cu
Battery 3
battery 2
cell voltage measured
0.905 V
metal anodezine (0.100 M)
metal cathode: copper (0.001) Cu
Battery 1
Standard cell potential:
E cell Ecell
+
Ecele = 0.942 +070,942
0.942 V
(0.1 m)
Ecel=
battery 3 0.905 v
Ecell
0.913 V
(0.001 μ)
=
cell = 0.913 V
0.913+0.0591 (-1.51)
= 0.824 V
0.0692 In-
= For battery 1:
[+]
[Cu²+]
n
0.001
0.905 + 0,2591 In (0,100,
2
E= E-0₁0592
A
1,04 V
la=
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