Given the standard reduction potentials: Zn²⁺/Zn = -0.76V, Cr³⁺/Cr = -0.74V, H⁺/H₂ = 0.00V, Fe³⁺/Fe²⁺ = +0.77V. Which is thestrongest reducing agent?
Correct answer: A. Zn(s)
- A. Zn(s)
- B. Cr(s)
- C. H₂(g)
- D. Fe²⁺(aq)
Explanation
A strong reducing agent is easily oxidized, meaning its corresponding reduction half reaction has the most negative standard reduction potential. Zinc (Zn has the most negative potential -0.76 V), making it the strongest reducing agent among the choices.
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