MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Electrochemical Series

The standard ...

Question

The standard electrode potentials of the electrodes are given below. Arrange them in decreasing order of ease of oxidation:
$(a) E l e c t r o d e - I, E^{o} = - 2.89 V$
$(b) E l e c t r o d e - I I, E^{o} = - 0.16 V$
$(c) E l e c t r o d e - I I I, E^{o} = 0.77 V$
$(d) E l e c t r o d e - I V, E^{o} = - 2.93 V$
$(e) E l e c t r o d e - V, E^{o} = - 1.67 V$

A

c b e a d

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

d a e b c

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

C

c e a d b

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

c b a d e

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $d a e b c$
The standard electrode potential is the tendency for a chemical species to be reduced, and is measured in volts at standard conditions. The more positive the potential is the more likely it will be reduced and more negative the potential is the more likely it will be oxidized. As $(d) E l e c t r o d e - I V, E^{o} = - 2.93 V$ has highest negative value thus will be first oxidized and $(c) E l e c t r o d e - I I I, E^{o} = 0.77 V$ will be oxidized last.

Suggest Corrections

thumbs-up

0

Similar questions

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

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

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

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

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

(c) Electrode - III,

E^{\circ} = 0.77 V

(d) Electrode - IV,

E^{\circ} = - 2.93 V

(e) Electrode - V,

E^{\circ} = - 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

Q. Given, standard electrode potentials,

F e^{2 +} + 2 e^{-} \to F e, E^{o} = - 0.440

F e^{3 +} + 3 e^{-} \to F e, E^{o} = - 0.036

The standard electrode potential

(E^{o})

F e^{3 +} + e^{-} \to F e^{2 +}

Q. Given standard electrode potentials :

{F e}^{3 +} + {3 e}^{-} ⟶ F e; E^{o} = - 0.036 v o l t

{F e}^{2 +} + {2 e}^{-} ⟶ F e; E^{o} = - 0.440 v o l t

The standard electrode potential

E^{o}

{F e}^{3 +} + e^{-} ⟶ {F e}^{2 +}

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Electrochemical series_tackle

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Electrochemical Series

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon