MISSED THIS? Watch KCV 19.6; Read Section 19.6. You can click on the Review link to access the section in your e Text. [Fe**] = 2.4x10-3 M ; [Mg²*] = 1.90 M Express your answer in units of volts. A voltaic cell employs the following redox reaction: 2 Fe* (aq) + 3 Mg (s) → 2 Fe (s) +3 Mg²* (aq) Calculate the cell potential at 25 °C under each of the following conditions. ? Ecell = Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining
MISSED THIS? Watch KCV 19.6; Read Section 19.6. You can click on the Review link to access the section in your e Text. [Fe**] = 2.4x10-3 M ; [Mg²*] = 1.90 M Express your answer in units of volts. A voltaic cell employs the following redox reaction: 2 Fe* (aq) + 3 Mg (s) → 2 Fe (s) +3 Mg²* (aq) Calculate the cell potential at 25 °C under each of the following conditions. ? Ecell = Submit Previous Answers Request Answer X Incorrect; Try Again; 2 attempts remaining
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Corrosion
Corrosion is defined as an activity that transforms refined metals into more chemically stable forms such as oxide, hydroxide, carbonate, or sulfide. It refers to the slow decomposition of things (typically metals); thanks to chemical and/or electrochemical reactions with their surroundings. Corrosion engineering is the science of preventing and controlling corrosion.
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Solving part B and C
E°cell from part A = 2.33V
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Review I Constants I Periodic Table
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Part B
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MISSED THIS? Watch KCV 19.6; Read Section 19.6.
[Fe+] = 2.4x10-3 M ; [Mg²+] =1.90 M
26
9
You can click on the Review link to access the section in
27
Study Area
your e Text.
Express your answer in units of volts.
28
Avera
A voltaic cell employs the following redox reaction:
2 Fe+ (aq) + 3 Mg (s) → 2 Fe (s)+ 3 Mg²+ (aq)
Calculate the cell potential at 25 °C under each of the
following conditions.
29
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Part C
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Fe+] = 1.90 M ; [Mg²+] = 2.4x10-3 M
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Review I Constants I Periodic Table
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MISSED THIS? Watch KCV 19.6; Read Section 19.6.
[Fe+] = 2.4x10-3 M ; [Mg²+] =1.90 M
26
9
You can click on the Review link to access the section in
27
Study Area
your e Text.
Express your answer in units of volts.
28
Avera
A voltaic cell employs the following redox reaction:
2 Fe+ (aq) + 3 Mg (s) → 2 Fe (s)+ 3 Mg²+ (aq)
Calculate the cell potential at 25 °C under each of the
following conditions.
29
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30
?
31
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Q. 4.
data?
Ther
Male
fema
Q. 5.
Il fibe
32
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Ecell
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34
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Previous Answers Request Answer
36
37
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X Incorrect; Try Again; 2 attempts remaining
39
40
Q. 6.
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41
42
Part C
state
43
stead
44
From
reach
Fe+] = 1.90 M ; [Mg²+] = 2.4x10-3 M
45
46
for m
Express your answer in units of volts.
47
expe
48
?
49
50
51
Ecel
V
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52
P Pearson
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Exercise 19.70 - Enhanced - with Feedback
8 of 8
Syllabus
26
9
I Review I Constants I Periodic Table
Scores
27
28
Avera
eТext
29
Part A
MISSED THIS? Watch KCV 19.6; Read Section 19.6.
You can click on the Review link to access the section in
30
31
Study Area
your e Text.
Q. 4.
data?
Ther
Male
fema
Q. 5.
Il fibe
standard conditions
32
A voltaic cell employs the following redox reaction:
2 Fe3+ (aq) + 3 Mg (s) → 2 Fe (s) + 3 Mg²+ (aq)
Calculate the cell potential at 25 °C under each of the
following conditions.
33
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Express your answer in units of volts.
34
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Ecell
= 2.33 V
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37
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fatig
beca
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39
Correct
40
Q. 6.
achie
Wou
Under standard conditions, the standard cell potential can be calculated using the following formula
because the concentration of each ion is assumed to be 1 M:
41
42
E cell
E
E° anode
state
cathode
43
stead
In this solution, Mg is more negative; therefore, it was assigned to the cathode. Fe is more
positive, and therefore it was assigned to the anode.
44
From
reach
45
46
for m
E cell
– 0.036 V
(-2.37 V)
2.33
47
expe
Under standard conditions, E° cell is positive. Therefore, this reaction is spontaneous in the forward
direction.
48
49
50
51
52
Part B
53.
Ready
Fe+] = 2.4x10-3 M ; [Mg²+] = 1.90 M
MAY
11
X
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Exercise 19.70 - Enhanced - with Feedback
8 of 8
Syllabus
26
9
I Review I Constants I Periodic Table
Scores
27
28
Avera
eТext
29
Part A
MISSED THIS? Watch KCV 19.6; Read Section 19.6.
You can click on the Review link to access the section in
30
31
Study Area
your e Text.
Q. 4.
data?
Ther
Male
fema
Q. 5.
Il fibe
standard conditions
32
A voltaic cell employs the following redox reaction:
2 Fe3+ (aq) + 3 Mg (s) → 2 Fe (s) + 3 Mg²+ (aq)
Calculate the cell potential at 25 °C under each of the
following conditions.
33
Document Sharing
Express your answer in units of volts.
34
User Settings
Ecell
= 2.33 V
35
36
37
Course Tools
>
Submit
Previous Answers
Туpе
fatig
beca
38
39
Correct
40
Q. 6.
achie
Wou
Under standard conditions, the standard cell potential can be calculated using the following formula
because the concentration of each ion is assumed to be 1 M:
41
42
E cell
E
E° anode
state
cathode
43
stead
In this solution, Mg is more negative; therefore, it was assigned to the cathode. Fe is more
positive, and therefore it was assigned to the anode.
44
From
reach
45
46
for m
E cell
– 0.036 V
(-2.37 V)
2.33
47
expe
Under standard conditions, E° cell is positive. Therefore, this reaction is spontaneous in the forward
direction.
48
49
50
51
52
Part B
53.
Ready
Fe+] = 2.4x10-3 M ; [Mg²+] = 1.90 M
MAY
11
X
...
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