Question
List four halides that would likely be strong oxidizing agents; four that would likely be useful reducing agents. Complete and balance plausible redox reactions between appropriate pairs of these halides.
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Strong oxidizing agents are substances that can gain electrons easily. The halides that are likely to be strong oxidizing agents include: Show more…
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Part III: The Reducing Strength of Halide Ions and Oxidizing Strengths of Elemental Halogens (15 points) 16. Indicate whether or not a reaction occurred for the following mixtures you made in lab. a. Cl- in Br2: b. Br- in Cl2: c. Br- in I2: d. I- in Br2: e. Cl- in I2: f. I- in Cl2: 17. For every mixture above where you said there was a reaction, write the net ionic equation for the reaction. 18. Make a table like the one in Question 4 to show the order of these agents from strongest to weakest reducing and oxidizing agent. TABLE 6.6 Strongest Reducing Agent | Weakest Oxidizing Agent Weakest Reducing Agent | Strongest Oxidizing Agent
A In the table of standard reduction potentials, locate the half-reactions for the reductions of the following nonmetals: $\mathrm{F}_{2}, \mathrm{Cl}_{2}, \mathrm{Br}_{2}, \mathrm{I}_{2}$ (reduction to halide ions), and $\mathrm{O}_{2}$ S, Se (reduction to $\mathrm{H}_{2} \mathrm{X}$ in aqueous acid). Among the elements, ions, and compounds that make up these halfreactions: (a) Which element is the weakest oxidizing agent? (b) Which element is the weakest reducing agent? (c) Which of the elements listed is (are) capable oxidizing $\mathrm{H}_{2} \mathrm{O}$ to $\mathrm{O}_{2} ?$ (d) Which of these elements listed is (are) capable of oxidizing $\mathrm{H}_{2} \mathrm{S}$ to $\mathrm{S} ?$ (e) Is $O_{2}$ capable of oxidizing $I^{-}$ to $I_{2}$, in acid solution? (f) Is S capable of oxidizing $I^{-}$ to $I_{2} ?$ (g) Is the reaction $\mathrm{H}_{2} \mathrm{S}(\mathrm{aq})+\mathrm{Se}(\mathrm{s}) \longrightarrow \mathrm{H}_{2} \mathrm{Se}(\mathrm{aq})+\mathrm{S}(\mathrm{s})$ product-favored? (h) Is the reaction $\mathrm{H}_{2} \mathrm{S}(\mathrm{aq})+\mathrm{I}_{2}(\mathrm{s}) \longrightarrow 2 \mathrm{H}^{+}(\mathrm{aq})+$ $2 \mathrm{I}^{-}(\mathrm{aq})+\mathrm{S}(\mathrm{s})$ product-favored?
Consider the following half-reactions: $\mathrm{Cd}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-}$ $\rightleftharpoons \mathrm{Cd}(\mathrm{s}) ; \mathrm{Pb}^{2+}(\mathrm{aq})+2 \mathrm{e}^{-} \rightleftharpoons \mathrm{Pb}(\mathrm{s}) ; \mathrm{Cl}_{2}(\mathrm{g})+2 \mathrm{e}^{-} \rightleftharpoons$ $2 \mathrm{Cl}^{-}(\text {aq }) .$ Identify the strongest and weakest oxidizing agents and the strongest and weakest reducing agents.
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