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20-02-2020
Chemistry

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What is the standard cell potential (E°cell) for the voltaic cell based on the reaction below? Sn2+ (aq) + 2Fe3+ (aq) → 2Fe2+ (aq) + Sn4+ (aq)

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sampsonola sampsonola

21-02-2020

Answer:

+ 0.617 v

Explanation:

Sn2+ (aq) + 2Fe3+ (aq) → 2Fe2+ (aq) + Sn4+ (aq)

half-life

Sn²⁺ → Sn⁴⁺ + 2e⁻ oxidation E ox = -0.154 v

2 Fe³⁺ + 2e⁻ → 2 Fe ²⁺ reduction E red = + 0.771 v

E° cell = E°red + E° ox = +0.77 v + (-0.154 v) = + 0.617 v

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