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Gibb's Energy and Nernst Equation

Standard elec...

Question

Standard electrode potentials are Fe2+/Fe; E° = -0.44 volts Fe3+/Fe2+; E° = 0.77 volts Fe2+, Fe3+ and Fe blocks are kept together, then (1) Fe2+ increases (2) Fe3+ decreases (3) Fe2+/Fe3+ remains unchanged (4) Fe2+ decreases

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E_{F e^{2 +} | F e}^{⊖}

E_{F e^{3 +} | F e^{2 +}}^{⊖}

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

F e

F e^{2 +} / F e (E^{o} = - 0.44 V), F e^{3 +} / F e^{2 +} (E^{o} = 0.77 V)

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

F e

F e^{2 +} ⇌ F e; E^{\circ} = - 0.44 V

F e^{3 +} ⇌ F e^{2 +}; E^{\circ} = + 0.77 V

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

F e

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

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

E^{\circ}

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

E_{F e^{2 +} / F e}^{\circ} = - 0.44 V and E_{F e^{3 +} / F e^{2 +}}^{\circ} = 0.77 V

E_{F e^{3 +} / F e}^{\circ}

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Standard electrode potentials are Fe2+/Fe; E° = -0.44 volts Fe3+/Fe2+; E° = 0.77 volts Fe2+, Fe3+ and Fe blocks are kept together, then (1) Fe2+ increases (2) Fe3+ decreases (3) Fe2+/Fe3+ remains unchanged (4) Fe2+ decreases​