The Standard Reduction Potential of H₂O₂ = +1 A) Co²⁺
B) Co²⁺ and Ag(s)
C) Co(s)and Co²⁺
D)

question 26

Multiple Choice

The standard reduction potential of H₂O₂ = +1.763 V.Which of the following species will be oxidized by hydrogen peroxide? $\begin{array}{l}\begin{array}{l}\\\mathrm{Co}^{2+}(a q) \rightarrow \mathrm{Co}^{3+}(a q) +2 e \\\Lambda \mathrm{g}(s) \rightarrow \mathrm{Ag}^{\prime}(a q) +e^{-} \\\mathrm{Co}(s) \rightarrow \mathrm{Co}^{2+}(a q) +2 e \\\mathrm{Zn}(s) \rightarrow \mathrm{Zn}^{2+}(a q) +2 e^{-} \\\mathrm{Na}(s) \rightarrow \mathrm{Na}^{+}(a q) +e-\end{array}\begin{array}{l} E_{\mathrm{red}}^{\circ} \\+1.953 \mathrm{~V} \\+0.799 \mathrm{~V} \\-0.282 \mathrm{~V} \\-0.762 \mathrm{~V} \\-2.714 \mathrm{~V}\end{array}\end{array}$

• A) Co²⁺
• B) Co²⁺ and Ag(s)
• C) Co(s)and Co²⁺
• D) Zn(s)and Na(s)
• E) Ag(s),Co(s),Zn(s),and Na(s)

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