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The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn?
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The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and ...
Understanding Redox Potentials
Redox potentials indicate the tendency of a species to gain or lose electrons. In this case, we have the following standard redox potentials:
- Mn^2+ + 2e- → Mn: E° = -1.18 V
- Mn^3+ + e- → Mn^2+: E° = 1.51 V
To find the redox potential for the reaction:
Mn^3+ + 3e- → Mn
we will combine the two given half-reactions.
Combining Half-Reactions
1. The first half-reaction can be reversed to express Mn as a product:
- Mn → Mn^2+ + 2e- (E° = +1.18 V)
2. The second half-reaction remains as is:
- Mn^3+ + e- → Mn^2+ (E° = 1.51 V)
Now, we need to align these reactions. We can multiply the second half-reaction by 2 to balance the number of electrons:
- 2(Mn^3+ + e- → Mn^2+) gives us:
- 2Mn^3+ + 2e- → 2Mn^2+ (E° = 1.51 V)
Now, we can add the reversed first half-reaction and the doubled second half-reaction:
Net Reaction
- Mn + 2Mn^3+ + 2e- → 2Mn^2+ + 2e-
This simplifies to:
- Mn + 2Mn^3+ → 2Mn^2+
Calculating the Overall Potential
Using the formula:
E° = E°(oxidation) + E°(reduction)
E° = 1.51 V + 1.18 V = 2.69 V
However, since we have 3 electrons in total from the original reaction, we need to divide by 3:
Final Redox Potential
E°(Mn^3+ + 3e- → Mn) = 2.69 V / 3 = 0.8967 V
Thus, the redox potential for the reaction Mn^3+ + 3e- → Mn is approximately 0.897 V.
Redox potentials indicate the tendency of a species to gain or lose electrons. In this case, we have the following standard redox potentials:
- Mn^2+ + 2e- → Mn: E° = -1.18 V
- Mn^3+ + e- → Mn^2+: E° = 1.51 V
To find the redox potential for the reaction:
Mn^3+ + 3e- → Mn
we will combine the two given half-reactions.
Combining Half-Reactions
1. The first half-reaction can be reversed to express Mn as a product:
- Mn → Mn^2+ + 2e- (E° = +1.18 V)
2. The second half-reaction remains as is:
- Mn^3+ + e- → Mn^2+ (E° = 1.51 V)
Now, we need to align these reactions. We can multiply the second half-reaction by 2 to balance the number of electrons:
- 2(Mn^3+ + e- → Mn^2+) gives us:
- 2Mn^3+ + 2e- → 2Mn^2+ (E° = 1.51 V)
Now, we can add the reversed first half-reaction and the doubled second half-reaction:
Net Reaction
- Mn + 2Mn^3+ + 2e- → 2Mn^2+ + 2e-
This simplifies to:
- Mn + 2Mn^3+ → 2Mn^2+
Calculating the Overall Potential
Using the formula:
E° = E°(oxidation) + E°(reduction)
E° = 1.51 V + 1.18 V = 2.69 V
However, since we have 3 electrons in total from the original reaction, we need to divide by 3:
Final Redox Potential
E°(Mn^3+ + 3e- → Mn) = 2.69 V / 3 = 0.8967 V
Thus, the redox potential for the reaction Mn^3+ + 3e- → Mn is approximately 0.897 V.
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The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn?
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The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn?.
The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn? for NEET 2024 is part of NEET preparation. The Question and answers have been prepared according to the NEET exam syllabus. Information about The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn? covers all topics & solutions for NEET 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The standard redox potentials for the reactions Mn^ 2+ + 2e -> Mn and M n^ 3+ +e Mn^ 2+ are-1.18V and 1.51V respectively. What is the redox potential for the reaction M n^ 3+ + 3e - Mn?.
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