Consider the following processes- Zn2- - 2e- - Zns- Eo - -0-76 V Ca2- - 2e- - Cas- Eo - -2-87 V Mg2- - 2e- - Mgs- Eo - -2-36 V Ni2- - 2e- - Nis- Eo - -0-25 VThe reducing power of the metals increases in the order-

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Electrochemical Series

Consider the ...

Question

Consider the following processes:
$Z n^{2 +} + 2 e^{-} \to Z n (s); E^{o} = - 0.76 V$
$C a^{2 +} + 2 e^{-} \to C a (s); E^{o} = - 2.87 V$
$M g^{2 +} + 2 e^{-} \to M g (s); E^{o} = - 2.36 V$
$N i^{2 +} + 2 e^{-} \to N i (s); E^{o} = - 0.25 V$
The reducing power of the metals increases in the order:

C a < Z n < M g < N i

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N i < Z n < M g < C a

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Z n < M g < N i < C a

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C a < M g < Z n < N i

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Z n^{2 +} + 2 e^{-} \to Z n (s); E^{o} = - 0.76 V

C a^{2 +} + 2 e^{-} \to C a (s); E^{o} = - 2.87 V

M g^{2 +} + 2 e^{-} \to M g (s); E^{o} = - 2.36 V

N i^{2 +} + 2 e^{-} \to N i (s); E^{o} = - 0.25 V

Z n {/ Z n}^{2 +} ∥ {N i}^{2 +} / N

E^{o}

{Z n}^{2 +} / Z n = - 0.76 V

E^{o}

{N i}^{2 +} / N i = - 0.25 V

E^{o}

Z n \to Z n^{2 +} + 2 e^{-}; E^{o} = - 0.76 V

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

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

E^{o}

Z n ⟶ {Z n}^{2 +} + 2 e^{-}

E^{o} = + 0.76 V

F e ⟶ {F e}^{2 +} + 2 e^{-}

E^{o} = + 0.41 V

{F e}^{2 +} + Z n ⟶ {Z n}^{2 +} + F e

25^{o} C

Z n^{2 +} + 2 e^{-} \to Z n, E^{o} = - 0.762 V

M g^{2 +} + 2 e^{-} \to M g, E^{o} = - 2.37 V

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