Part C Part D Calculate the standard cell potential at 25 °C for Mg(s) + Fe²+ (aq) →Mg²+ (aq) + Fe(s) Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) μA E = Value Submit Previous Answers V ?
Part C Part D Calculate the standard cell potential at 25 °C for Mg(s) + Fe²+ (aq) →Mg²+ (aq) + Fe(s) Express your answer to three significant figures and include the appropriate units. ▸ View Available Hint(s) μA E = Value Submit Previous Answers V ?
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Calculate the standard cell potential at 25 ∘C
for
Mg(s)+Fe2+(aq)→Mg2+(aq)+Fe(s)
Express your answer to three significant figures and include the appropriate units.
Transcribed Image Text:<Week 7 Assignment: Electrochemistry
+ Introduction to the Nernst Equation
Learning Goal:
To learn how to use the Nernst equation.
The standard reduction potentials listed in any reference
table are only valid at the common reference temperature of
25 °C and standard conditions of 1 M for solutions and 1
atm for gases. To calculate the cell potential at nonstandard
conditions, one uses the Nernst equation,
E = E°
log10 Q
where E is the potential in volts, Eº is the standard potential
at 25 °C in volts, R = 8.314 J/(K. mol) is the gas
2.303 RT
nF
constant, T is the temperature in kelvins, n is the number of
moles of electrons transferred, F = 96, 500 C/(mol e) is
the Faraday constant, and is the reaction quotient.
At the common reference temperture of 298 K, substituting
each constant into the equation the result is
E = E°
0.0592 log10
Q
n
Part B
▸ Part C
Part D
Calculate the standard cell potential at 25 °C for
Mg(s) + Fe²+ (aq) →Mg2+ (aq) + Fe(s)
Express your answer to three significant figures and include the appropriate units.
► View Available Hint(s)
HÅ
E° = Value
Submit
Previous Answers
V
?
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