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The positive value of the standard electrode potential of Cu2+/Cu,
(E°Cu2+/Cu = 0.34 V) indicates that
- a)this redox couple is a stronger reducing agent than H+/H2 couple
- b)this redox couple is a stronger oxidising agent than H+/H2 couple
- c)Cu can displace H2 from acid
- d)Cu can not displace H2 from acid
Correct answer is option 'B,D'. Can you explain this answer?
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Verified Answer
The positive value of the standard electrode potential of Cu2+/Cu,(E&#...
E°cell > 0 thus spontaneous
Cu2+/Cu couple is thus a stronger oxidising agent. Reverse reaction is non-spontaneous.
Cu + 2H+ → Cu2+ + H2, E°cell = - 0.34 V
Thus, copper cannot displace H2 from acid.
Most Upvoted Answer
The positive value of the standard electrode potential of Cu2+/Cu,(E&#...
Understanding Standard Electrode Potential
The standard electrode potential (E°) provides insight into the oxidizing and reducing abilities of different half-cells. For the Cu2+/Cu couple, E° = 0.34 V.
Why Option B is Correct: Stronger Oxidizing Agent
- The positive value of E° indicates that Cu2+ is a good oxidizing agent.
- Oxidizing agents are species that gain electrons and undergo reduction.
- Since Cu2+ has a higher potential compared to the H+/H2 couple (which has E° = 0.00 V), it means Cu2+ is more likely to accept electrons than H+.
- Therefore, Cu2+/Cu is a stronger oxidizing agent than the H+/H2 couple.
Why Option D is Correct: Copper Cannot Displace Hydrogen
- To displace hydrogen from acid, a metal must be a stronger reducing agent than hydrogen ions.
- Since E° for Cu2+/Cu is positive but less than that for H+/H2, it indicates that copper cannot reduce H+ to H2.
- Consequently, Cu cannot displace H2 from an acid, confirming option D.
Summary of Options
- Option A: Incorrect, because Cu2+/Cu is not a stronger reducing agent than H+/H2.
- Option B: Correct, as Cu2+ is a stronger oxidizing agent.
- Option C: Incorrect, since Cu cannot displace H2.
- Option D: Correct, confirming that Cu cannot displace H2 from acids.
Overall, options B and D correctly describe the behavior of the Cu2+/Cu redox couple in relation to hydrogen and its implications in redox chemistry.
The standard electrode potential (E°) provides insight into the oxidizing and reducing abilities of different half-cells. For the Cu2+/Cu couple, E° = 0.34 V.
Why Option B is Correct: Stronger Oxidizing Agent
- The positive value of E° indicates that Cu2+ is a good oxidizing agent.
- Oxidizing agents are species that gain electrons and undergo reduction.
- Since Cu2+ has a higher potential compared to the H+/H2 couple (which has E° = 0.00 V), it means Cu2+ is more likely to accept electrons than H+.
- Therefore, Cu2+/Cu is a stronger oxidizing agent than the H+/H2 couple.
Why Option D is Correct: Copper Cannot Displace Hydrogen
- To displace hydrogen from acid, a metal must be a stronger reducing agent than hydrogen ions.
- Since E° for Cu2+/Cu is positive but less than that for H+/H2, it indicates that copper cannot reduce H+ to H2.
- Consequently, Cu cannot displace H2 from an acid, confirming option D.
Summary of Options
- Option A: Incorrect, because Cu2+/Cu is not a stronger reducing agent than H+/H2.
- Option B: Correct, as Cu2+ is a stronger oxidizing agent.
- Option C: Incorrect, since Cu cannot displace H2.
- Option D: Correct, confirming that Cu cannot displace H2 from acids.
Overall, options B and D correctly describe the behavior of the Cu2+/Cu redox couple in relation to hydrogen and its implications in redox chemistry.
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The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer?
Question Description
The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer?.
The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The positive value of the standard electrode potential of Cu2+/Cu,(E°Cu2+/Cu= 0.34 V) indicates thata)this redox couple is a stronger reducing agent than H+/H2coupleb)this redox couple is a stronger oxidisingagent than H+/H2couplec)Cu can displace H2 from acidd)Cu can not displace H2 from acidCorrect answer is option 'B,D'. Can you explain this answer?.
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