Given standard electrode potential Fe2-2e- Fe- E0-0-440V Fe3-3e- Fe- E0-0-036V- Calculate the electrode potential of cell-

The correct option is D +0.772 V Δ G^o= nFE^o For the reaction, Fe^2++2e^ → Fe Δ G^o= 2× F× ( 0.440V)=0.880F #160; ....(I) For the reactio ...

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Standard XII

Chemistry

Equivalent, Molar Conductivity and Cell Constant

Given standar...

Question

Given standard electrode potential $F e^{2 +} + 2 e^{-} \to F e; E^{0} = - 0.440 V$ $F e^{3 +} + 3 e^{-} \to F e; E^{0} = - 0.036$ V. Calculate the electrode potential of cell.

+ 0.772

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Solution

The correct option is D $+ 0.772$ V
$Δ G^{o} = - n F E^{o}$
For the reaction,
$F e^{2 +} + 2 e^{-} \to F e$
$Δ G^{o} = - 2 \times F \times (- 0.440 V) = 0.880 F$ ....(I)
For the reaction,
$F e^{3 +} + 3 e^{-} \to F e$
$Δ G^{o} = - 3 \times F \times (- 0.036) = 0.108 F$ ....(II)
On subtracting equation (I) from equation (II)
$F e^{3 +} + e^{-} \to F e^{2 +}$
$Δ G^{o} = 0.108 F - 0.880 F = - 0.772 F$
$E^{o} = - \frac{Δ G^{o}}{n F} = - \frac{- 0.772 F}{1 \times F}$
$= + 0.772$ V.

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Similar questions

Q. Standard electrode potentials of

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

and

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

are

- 0.440

V and

- 0.036

V respectively. The standard electrode potential

(E^{0})

for

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

is:

Q. Standard electrode potentials of

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

and

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

are

- 0.440 V

and

- 0.036 V

respectively.
The standard electrode potential (

E^{0}

) for

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

is:

Given standard electrode potentials:

$F e^{3 +} + 3 e^{-} \to F e; E^{0} = - 0.036 V$

$F e^{2 +} + 2 e^{-} \to F e; E^{0} = - 0.440 V$

The standard electrode potential $E^{o}$ for $F e^{3 +} + e^{-} \to F e^{2 +}$ is:

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})

for

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

is:

Q. Standard electrode potentials of

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

and

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

are

- 0.440 V

and

- 0.036 V

respectively.
The standard electrode potential (

E^{0}

) for

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

is -

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Given standard electrode potential Fe2++2e−→Fe;E0=−0.440V Fe3++3e−→Fe;E0=−0.036V. Calculate the electrode potential of cell.

Given standard electrode potential $F e^{2 +} + 2 e^{-} \to F e; E^{0} = - 0.440 V$ $F e^{3 +} + 3 e^{-} \to F e; E^{0} = - 0.036$ V. Calculate the electrode potential of cell.