Identify the Strongest Reducing Agent in the Following Half-Reactions

question 90

Multiple Choice

Identify the strongest reducing agent in the following half-reactions. The standard reduction potentials are listed. -0.95 VSnO₂(s) + 2H₂O( ) + 4e^-  Sn(s) + 4OH^-(aq)
+0) 61 VHg₂SO₄(s) + 2e^-  2Hg(l) + SO₄^2-(aq)
-1) 48 VCr(OH) ₃(s) + 3e^-  Cr(s) + 3OH^-(aq)
+1) 22 VMnO₂(s) + 4H⁺(aq) + 2e^-  Mn²⁺(aq) + 2H₂O(l)

• A) Cr
• B) MnO₂
• C) Hg₂SO₄
• D) Sn
• E) Hg

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