E 0 for the reactionFe - Zn 2- Zn - Fe 2- is -0-35 VThe given cell reaction isA- in equilibriumB- NoneC- not feasibleD- feasible

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

Byju's Answer

Standard XII

Chemistry

Representation of Cell

E 0 for the r...

Question

Eº for the reaction

Fe + Zn2+ = Zn + Fe2+ is - 0.35 V.

The given cell reaction is

feasible

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

not feasible

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

in equilibrium

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

None

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

Open in App

Solution

The correct option is B
not feasible

Since EMF of the cell is negative i.e. Free energy change will be positive so cell reaction will not be feasible.

Suggest Corrections

Similar questions

Q. Reduction potential for the following half/cell reaction are

Z n \to Z n^{2 +} + 2 e^{-} (E_{(Z n^{2 +} / Z n)}^{0} = - 0.76 V)

F e \to F e^{2 +} + 2 e^{-} E^{0} = 0.41 V

The EMF for the cell reaction

F e^{2 +} + Z n \to Z n^{2 +} + F e

will

The standard reduction potentials, $E^{\circ}$ , for the half-reactions are as $Z n = Z n^{2 +} + 2 e$ , $E^{\circ}$ = + 0.76 V and $F e = F e^{2 +} + 2 e$ , $E^{\circ}$ = + 0.41 V. The e.m.f. for the cell reaction, $F e^{2 +} + Z n = Z n^{2 +} + F e$ is

Q. Using the standard electrode potential , find out the pair between which redox reaction is not feasible .

E^{0}

values :

F e^{3 +} / F e^{2 +}

= +0.77;

I_{2} / I^{-}

= + 0.54;

C u^{2 +} / C u

= +0.34;

A g^{+} / A g

= +0.80V

Q. The standard oxidation potentials

E^{o}

, for the half cell reactions are given as

Z n \to Z n^{2 +} + 2 e^{-}, E^{\circ} = + 0.76 V F e \to F e^{2 +} + 2 e^{-}, E^{\circ} = + 0.41 V

The EMF for the cell reaction,

F e^{2 +} + Z n \to Z n^{2 +} + F e

is:

$E^{0}$ for the cell, $Z n | Z n {^{2 +}}_{(a q)} | | C u {^{2 +}}_{(a q)} | C u$ is $1.10 V$ at $25^{0} C$ . The equilibrium constant for $Z n + C u {^{2 +}}_{(a q)} \to Z n {^{2 +}}_{(a q)} + C u$ the cell reaction is of the order of :

Join BYJU'S Learning Program

Eº for the reaction Fe + Zn2+ = Zn + Fe2+ is - 0.35 V. The given cell reaction is

The correct option is B not feasibleSince EMF of the cell is negative i.e. Free energy change will be positive so cell reaction will not be feasible.

Eº for the reaction

Fe + Zn2+ = Zn + Fe2+ is - 0.35 V.

The given cell reaction is

The correct option is B
not feasible

Since EMF of the cell is negative i.e. Free energy change will be positive so cell reaction will not be feasible.