Domanda del libro di testo
Consider the following substances: I2(s), Fe2+(aq), Cr2O72-(aq). Which is the strongest oxidizing agent? Which is the weakest oxidizing agent?
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Ch.19 - Electrochemistry
McMurry8th EditionChemistryISBN: 9781292336145
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TOC.tableOfContents
- Ch.1 - Chemical Tools: Experimentation & Measurement170
- Ch.2 - Atoms, Molecules & Ions160
- Ch.3 - Mass Relationships in Chemical Reactions169
- Ch.4 - Reactions in Aqueous Solution199
- Ch.5 - Periodicity & Electronic Structure of Atoms102
- Ch.6 - Ionic Compounds: Periodic Trends and Bonding Theory92
- Ch.7 - Covalent Bonding and Electron-Dot Structures61
- Ch.8 - Covalent Compounds: Bonding Theories and Molecular Structure59
- Ch.9 - Thermochemistry: Chemical Energy122
- Ch.10 - Gases: Their Properties & Behavior155
- Ch.11 - Liquids & Phase Changes54
- Ch.12 - Solids and Solid-State Materials73
- Ch.13 - Solutions & Their Properties120
- Ch.14 - Chemical Kinetics98
- Ch.15 - Chemical Equilibrium125
- Ch.16 - Aqueous Equilibria: Acids & Bases110
- Ch.17 - Applications of Aqueous Equilibria147
- Ch.18 - Thermodynamics: Entropy, Free Energy & Equilibrium86
- Ch.19 - Electrochemistry154
- Ch.20 - Nuclear Chemistry96
- Ch.21 - Transition Elements and Coordination Chemistry156
- Ch.22 - The Main Group Elements187
- Ch.23 - Organic and Biological Chemistry51
Capitolo 19, Problema 77
Consider the following substances: Fe2+(aq), Sn2+(aq), I-(aq). Identify the strongest reducing agent and the weakest reducing agent.
Guida verificata passo dopo passo1
Identify the standard reduction potentials for each species from a standard reduction potential table.
Recall that a reducing agent is a substance that donates electrons and is oxidized in the process.
The strength of a reducing agent is inversely related to its reduction potential; the lower (more negative) the reduction potential, the stronger the reducing agent.
Compare the standard reduction potentials of Fe^{2+}, Sn^{2+}, and I^{-} to determine which has the lowest and highest values.
Identify the species with the lowest reduction potential as the strongest reducing agent and the one with the highest reduction potential as the weakest reducing agent.
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Reducing Agents
A reducing agent is a substance that donates electrons in a chemical reaction, thereby reducing another substance. The strength of a reducing agent is determined by its ability to lose electrons easily. Stronger reducing agents have a greater tendency to be oxidized, while weaker reducing agents are less likely to lose electrons.
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Percorso guidato
01:01
Oxidizing and Reducing Agents
Standard Reduction Potentials
Standard reduction potentials (E°) are measured values that indicate the tendency of a species to gain electrons and be reduced. A more negative E° value corresponds to a stronger reducing agent, as it indicates a greater likelihood of oxidation. By comparing the E° values of the given ions, one can determine which is the strongest and weakest reducing agent.
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Percorso guidato
01:10Standard Reduction Potentials
Electrochemical Series
The electrochemical series is a list of standard reduction potentials for various half-reactions, arranged from strongest to weakest oxidizing agents. This series helps predict the direction of redox reactions and the relative strength of reducing agents. By consulting this series, one can identify which of the given ions (Fe2+, Sn2+, I-) is the strongest and weakest reducing agent.
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02:46Electrochemical Cells
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Consider the following substances: Fe(s), PbO2(s), H+(aq), Al(s), Ag(s), Cr2O72-(aq).
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Consider the following substances: Fe(s), PbO2(s), H+(aq), Al(s), Ag(s), Cr2O72-(aq). (a) Look at the E° values in Appendix D, and classify each substance as an oxidizing agent or a reducing agent.
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