- 1(current)
Q. No.At \(298 \mathrm{~K},\) the standard electrode potentials of \(\mathrm{Cu}^{2+} /\mathrm{Cu}, \mathrm{Zn}^{2+} / \mathrm{Zn}, \mathrm{Fe}^{2+} / \mathrm{Fe}\) and \(\mathrm{Ag}^{+} / \mathrm{Ag} \) are \(0.34 \mathrm{~V}, -0.76 \mathrm{~V},-0.44 \mathrm{~V}\) and \(0.80 \mathrm{~V},\) respectively.
On the basis of standard electrode potentials, predict which of the following reaction can not occur?
On the basis of standard electrode potentials, predict which of the following reaction can not occur?
| 1. | \(2 \mathrm{CuSO}_{4}(\mathrm{aq})+2 \mathrm{Ag}(\mathrm{s}) \rightarrow 2 \mathrm{Cu}(\mathrm{s})+\mathrm{Ag}_{2} \mathrm{SO}_{4}(\mathrm{aq}) \) |
| 2. | \(\mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{Zn}(\mathrm{s}) \) \(\rightarrow \mathrm{ZnSO}_{4}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s}) \) |
| 3. | \(\mathrm{CuSO}_{4}(\mathrm{aq})+\mathrm{Fe}(\mathrm{s}) \) \(\rightarrow \mathrm{FeSO}_{4}(\mathrm{aq})+\mathrm{Cu}(\mathrm{s}) \) |
| 4. | \(\mathrm{FeSO}_{4}(\mathrm{aq})+\mathrm{Zn}(\mathrm{s}) \) \(\rightarrow \mathrm{ZnSO}_{4}(\mathrm{aq})+\mathrm{Fe}(\mathrm{s}) \) |
Subtopic: Emf & Electrode Potential |
70%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
The standard electrode potential (E°) values of Al3+/ Al, Ag+ / Ag, K+ / K, and Cr3+ / Cr are -1.66 V, 0.80 V, -2.93 V, & -0.79 V respectively. The correct decreasing order of the reducing power of the metal is:
| 1. | Ag > Cr > Al > K | 2. | K > Al > Cr > Ag |
| 3. | K > Al > Ag > Cr | 4. | Al > K > Ag > Cr |
Subtopic: Emf & Electrode Potential |
73%
From NCERT
NEET - 2019
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh
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Q. No.
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