Chemistry Exam > Chemistry Questions > The standard reduction potentials of the Fe3+...
Start Learning for Free
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______
Correct answer is '-0.03'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples...
Given information:
- Standard reduction potentials of Fe3 /Fe2 and Fe2 /Fe couples are 0.77 and 0.44 V, respectively.
To find:
- Standard reduction potential for the Fe3 /Fe couple.
Solution:
The standard reduction potential for a half-reaction is defined as the potential difference between the standard hydrogen electrode (SHE) and the electrode in question, when both are in their standard states and the electron transfer occurs under standard conditions (298 K, 1 atm pressure, and 1 M concentration).
The half-reactions for the Fe3 /Fe2 and Fe2 /Fe couples are as follows:
Fe3+ + e- → Fe2+ E° = 0.77 V
Fe2+ + 2e- → Fe(s) E° = 0.44 V
To find the standard reduction potential for the Fe3 /Fe couple, we need to use the Nernst equation:
E = E° - (RT/nF) ln Q
Where,
- E is the cell potential under non-standard conditions
- E° is the standard reduction potential
- R is the gas constant (8.314 J/mol K)
- T is the temperature in Kelvin
- n is the number of electrons transferred in the half-reaction
- F is the Faraday constant (96,485 C/mol)
- Q is the reaction quotient
For the Fe3 /Fe2 half-reaction, the number of electrons transferred is 1. Therefore, we can use the Nernst equation as follows:
E = 0.77 - (8.314 x 298/1 x 96485) ln ([Fe2+]/[Fe3+])
At equilibrium, [Fe2+]/[Fe3+] = 10^(E°/0.0592)
Substituting the given values, we get:
E = 0.77 - (8.314 x 298/1 x 96485) ln (10^(0.77/0.0592))
E = -0.03 V
Therefore, the standard reduction potential for the Fe3 /Fe couple is -0.03 V.
Conclusion:
The standard reduction potential for the Fe3 /Fe couple is -0.03 V.
- Standard reduction potentials of Fe3 /Fe2 and Fe2 /Fe couples are 0.77 and 0.44 V, respectively.
To find:
- Standard reduction potential for the Fe3 /Fe couple.
Solution:
The standard reduction potential for a half-reaction is defined as the potential difference between the standard hydrogen electrode (SHE) and the electrode in question, when both are in their standard states and the electron transfer occurs under standard conditions (298 K, 1 atm pressure, and 1 M concentration).
The half-reactions for the Fe3 /Fe2 and Fe2 /Fe couples are as follows:
Fe3+ + e- → Fe2+ E° = 0.77 V
Fe2+ + 2e- → Fe(s) E° = 0.44 V
To find the standard reduction potential for the Fe3 /Fe couple, we need to use the Nernst equation:
E = E° - (RT/nF) ln Q
Where,
- E is the cell potential under non-standard conditions
- E° is the standard reduction potential
- R is the gas constant (8.314 J/mol K)
- T is the temperature in Kelvin
- n is the number of electrons transferred in the half-reaction
- F is the Faraday constant (96,485 C/mol)
- Q is the reaction quotient
For the Fe3 /Fe2 half-reaction, the number of electrons transferred is 1. Therefore, we can use the Nernst equation as follows:
E = 0.77 - (8.314 x 298/1 x 96485) ln ([Fe2+]/[Fe3+])
At equilibrium, [Fe2+]/[Fe3+] = 10^(E°/0.0592)
Substituting the given values, we get:
E = 0.77 - (8.314 x 298/1 x 96485) ln (10^(0.77/0.0592))
E = -0.03 V
Therefore, the standard reduction potential for the Fe3 /Fe couple is -0.03 V.
Conclusion:
The standard reduction potential for the Fe3 /Fe couple is -0.03 V.
Free Test
FREE
| Start Free Test |
Community Answer
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples...
|
Explore Courses for Chemistry exam
|
|
Similar Chemistry Doubts
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer?
Question Description
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer?.
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? for Chemistry 2024 is part of Chemistry preparation. The Question and answers have been prepared according to the Chemistry exam syllabus. Information about The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? covers all topics & solutions for Chemistry 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer?.
Solutions for The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
Download more important topics, notes, lectures and mock test series for Chemistry Exam by signing up for free.
Here you can find the meaning of The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer?, a detailed solution for The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? has been provided alongside types of The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The standard reduction potentials of the Fe3+/Fe2+ and Fe2+/Fe couples are 0.77 and –0.44 V, respectively. The standard reduction potential (in V) for the Fe3+/Fe couple is _______Correct answer is '-0.03'. Can you explain this answer? tests, examples and also practice Chemistry tests.
|
|
Explore Courses for Chemistry exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup