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Oxoacids of Halogens

Which of the ...

Question

Which of the following is not anodic reaction in an electrochemical series?

C l^{-} \to C l + e^{-}

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C u \to C u^{2 +} + 2 e^{-}

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H^{+} + e^{-} \to H

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A g - e^{-} \to A g^{+}

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Solution

The correct option is C $H^{+} + e^{-} \to H$
In Anodic reaction, oxidation occurs at the electrode.

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Similar questions

P b^{2 +} + 2 e \to P b

(E^{o} = - 0.13 v)

A g^{+} + e \to A g

(E^{o} = + 0.80 v)

{A g}^{+} + e^{-} ⟶ A g; E_{{A g}^{+} | A g}^{o} = - 0.3995 V

{F e}^{2 +} ⟶ {F e}^{3 +} + e^{-}; E_{{F e}^{3 +} | {F e}^{2 +}}^{o} = - 0.7120 V

F e^{2 +} (a q) + A g^{+} (a q) \to A g (s) + F e^{3 +} (a q)

[A g^{+}]

[F e^{3 +}]

A g

A g C l (s) + e^{-} \to A g (s) + C l^{-} (a q)

C u (s) \to C u^{2 +} (a q) + 2 e^{-}

0.5 A

1 h

C u

63.6

F = 96500 C m o l^{- 1}

C u / C u^{2 +} / / A g^{+} / A g

C u^{2 +} + e \to C u^{+} {E_{1}}^{\circ} = 0.15 V

C u^{+} + e \to C u {E_{2}}^{\circ} = 0.5 V

A g^{+} + e \to A g {E_{3}}^{\circ} = 0.799 V

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