Use the Standard Reduction Potentials Below to Determine Which Element

question 31

Multiple Choice

Use the standard reduction potentials below to determine which element or ion is the best reducing agent. $\begin{array}{ll}\mathrm{NO}_{3}^{-}(a q) +4 \mathrm{H}^{+}(a q) +3 e^{-} \rightarrow \mathrm{NO}(g) +2 \mathrm{H}_{2} \mathrm{O}(t) & E^{\circ}=+0.955 \mathrm{~V} \\\mathrm{Pd}^{2+}(a q) +2 \mathrm{e}^{-} \rightarrow \mathrm{Pd}(s) & E^{\circ}=+0.90 \mathrm{~V} \\2 \mathrm{H}^{+}(a q) +2 \mathrm{e}^{-} \rightarrow \mathrm{H}_{2}(g) & E^{\circ}=0.00 \mathrm{~V}\end{array}$

• A) Pd²⁺(aq)
• B) Pd(s)
• C) H⁺(aq)
• D) H₂(g)
• E) NO₃^-(aq)

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Ending

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A conceptual framework suggesting that change occurs in five distinct stages: precontemplation, contemplation, preparation, action, and maintenance.

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Refers to Carl R. Rogers, an influential American psychologist known for his contributions to humanistic psychology and the client-centered approach.