Pairs of electrodes and their corresponding standard electrode potentials are given- Arrange the cells constructed by these electrodes in increasing order of emf values-a Electrode - A- E- -2-92 V and Electrode - B- E- -2-71 Vb Electrode - C- E- -0-760 V and Electrode - D- E- -0-44 Vc Electrode - B- E- -2-71 V and Electrode - D- E- -0-44 Vd Electrode - A- E- -2-92 V and Electrode - C- E- 0-76 V

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Standard XII

Physics

V-I Characteristics for a P-N Junction Diode

Pairs of elec...

Question

Pairs of electrodes and their corresponding standard electrode potentials are given. Arrange the cells constructed by these electrodes in increasing order of emf values.
(a) Electrode $\to A, E^{\circ} =$ $- 2.92$ V and Electrode $\to B, E^{\circ} =$ $- 2.71$ V
(b) Electrode $\to C, E^{\circ} =$ $- 0.760$ V and Electrode $\to D, E^{\circ} =$ $- 0.44$ V
(c) Electrode $\to B, E^{\circ} =$ $- 2.71$ V and Electrode $\to D, E^{\circ} =$ $- 0.44$ V
(d) Electrode $\to A, E^{\circ} =$ $- 2.92$ V and Electrode $\to C, E^{\circ} =$ $0.76$ V

b a d c

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a b d c

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b d a c

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b d c a

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Solution

The correct option is B a b d c

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Q. Pairs of electrodes and their corresponding standard electrode potentials are given. Arrange the cells constructed by these electrodes in increasing order of emf values.

(a) E l e c t r o d e \to A, E^{o} = - 2.92 V

and

E l e c t r o d e \to B, E^{o} = - 2.71 V

(b) E l e c t r o d e \to C, E^{o} = - 0.760 V

and

E l e c t r o d e \to D, E^{o} = - 0.44 V

(c) E l e c t r o d e \to B, E^{o} = - 2.71 V

and

E l e c t r o d e \to D, E^{o} = - 0.44 V

(d) E l e c t r o d e \to A, E^{o} = - 2.92 V

and

E l e c t r o d e \to C, E^{o} = - 0.76 V

Q. The standard electrode potentials of the electrodes are given below. Arrange them in decreasing order of ease of oxidation.
(a) Electrode - I,

E^{\circ} = - 2.89 V

(b) Electrode - II,

E^{\circ} = - 0.93 V

E^{\circ} = 0.77 V

(d) Electrode - IV,

E^{\circ} = - 2.93 V

(e) Electrode - V,

E^{\circ} = - 1.67 V

Q. The standard electrode potentials of the electrodes are given below. Arrange them in decreasing order of ease of oxidation:

(a) E l e c t r o d e - I, E^{o} = - 2.89 V

(b) E l e c t r o d e - I I, E^{o} = - 0.16 V

(c) E l e c t r o d e - I I I, E^{o} = 0.77 V

(d) E l e c t r o d e - I V, E^{o} = - 2.93 V

(e) E l e c t r o d e - V, E^{o} = - 1.67 V

Q. From the standard electrode potential values of the electrodes given select an option representing their decreasing order discharge potential:

(a) A, E^{o} = 2.32 V

(b) B, E^{o} = 1.36 V

(c) C, E^{o} = 1.07 V

(c) D, E^{o} = 0.43 V

Given standard electrode potentials
$F e^{+ +} + 2 e^{-} \to F e; E^{\circ} = - 0.440 V$
$F e^{+ + +} + 3 e^{-} \to F e; E^{\circ} = - 0.036 V$
The standard electrode potential $(E^{\circ})$ for $F e^{+ + +} + e^{-} \to F e^{+ +}$ is

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