Use the table of standard reduction potentials (Table 18.1)...

Use the table of standard reduction potentials (Table $18.1)$ to pick a reagent that is capable of each of the following oxidations (under standard conditions in acidic solution). a. oxidize $\mathrm{Br}^{-}$ to $\mathrm{Br}_{2}$ but not oxidize $\mathrm{Cl}^{-}$ to $\mathrm{Cl}_{2}$ b. oxidize $\mathrm{Mn}$ to $\mathrm{Mn}^{2+}$ but not oxidize $\mathrm{Ni}$ to $\mathrm{Ni}^{2+}$

Use the table of standard reduction potentials (Table $18.1)$ to pick a reagent that is capable of each of the following oxidations (under standard conditions in acidic solution).
a. oxidize $\mathrm{Br}^{-}$ to $\mathrm{Br}_{2}$ but not oxidize $\mathrm{Cl}^{-}$ to $\mathrm{Cl}_{2}$
b. oxidize $\mathrm{Mn}$ to $\mathrm{Mn}^{2+}$ but not oxidize $\mathrm{Ni}$ to $\mathrm{Ni}^{2+}$

Key Concepts

Standard Reduction Potentials

Standard reduction potentials quantify the tendency of a chemical species to be reduced under standard conditions. They form the basis for predicting the direction of electron flow in redox reactions by comparing the potentials of different half-reactions, thus allowing for the selection of appropriate oxidizing or reducing agents.

Oxidizing Agents

Oxidizing agents are substances that accept electrons in a reaction, causing another substance to lose electrons (i.e., be oxidized). Their strength as oxidants is determined by their standard reduction potential, with higher potentials indicating a greater ability to oxidize other species.

Electrochemical Series

The electrochemical series is a ranking of chemical species based on their standard reduction potentials. This series is crucial for understanding and predicting the outcome of redox reactions, as it helps determine which species will act as the oxidizing agent and which as the reducing agent.

Reaction Selectivity in Redox Chemistry

Reaction selectivity in redox chemistry involves choosing a reagent with an appropriate standard potential such that it can selectively oxidize one substance without affecting others. This selectivity is achieved by ensuring that the reagent’s oxidizing power is sufficient for the target oxidation but insufficient to drive other undesired oxidations.

Acidic Conditions in Redox Reactions

Redox reactions carried out under acidic conditions use a medium where H+ ions are present, which can influence the reaction mechanisms and standard reduction potentials. Standard reduction potential tables are typically tabulated under these conditions, making them a fundamental reference for redox reactions in acidic solutions.

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