Write the Formula of the Weakest Reducing Agent Given the Following

question 75

Multiple Choice

Write the formula of the weakest reducing agent given the following standard reduction potentials in acid solution: $\begin{array}{ll}\mathrm{O}_{2}+4 \mathrm{H}^{+}+4 \mathrm{e}^{-} \rightarrow 2 \mathrm{H}_{2} \mathrm{O} & \mathrm{E}^{\circ}=+1.23 \mathrm{~V} \\\mathrm{Sn}^{4+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Sn}^{2+} & \mathrm{E}^{\circ}=+0.13 \mathrm{~V} \\\mathrm{Zn}^{2+}+2 \mathrm{e}^{-} \rightarrow \mathrm{Zn}(\mathrm{~s}) & \mathrm{E}^{\circ}=-0.76 \mathrm{~V}\end{array}$

• A) Zn(s)
• B) Sn²⁺
• C) O₂
• D) H₂O
• E) None of the above

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