Domanda del libro di testo
By using the data in Appendix E, determine whether each of the following substances is likely to serve as an oxidant or a reductant: (a) Cl2(g), (b) MnO4- (aq, acidic solution), (c) Ba(s)
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Ch.20 - Electrochemistry
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 20, Problema 44
From each of the following pairs of substances, use data in Appendix E to choose the one that is the stronger oxidizing agent: (a) Cl2(g) or Br2(l) (b) Zn2+(aq) or Cd2+(aq) (c) Cl-(aq) or ClO3-(aq) (d) H2O2(aq) or O3(g)
Guida verificata passo dopo passo1
Step 1: Understand that a stronger oxidizing agent is a substance that has a higher tendency to gain electrons, which corresponds to a higher (more positive) standard reduction potential.
Step 2: For each pair of substances, refer to Appendix E to find the standard reduction potentials (E° values) for the relevant half-reactions.
Step 3: Compare the E° values for each pair. The substance with the higher E° value is the stronger oxidizing agent.
Step 4: For pair (a), compare the E° values for Cl₂(g) and Br₂(l). Identify which has the higher E° value.
Step 5: Repeat the comparison process for pairs (b), (c), and (d) using the same method: find the E° values and determine which substance in each pair has the higher value, indicating the stronger oxidizing agent.
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Oxidizing Agents
An oxidizing agent is a substance that gains electrons in a chemical reaction, causing another substance to be oxidized. The strength of an oxidizing agent is determined by its ability to accept electrons, which is often reflected in its standard reduction potential. A higher reduction potential indicates a stronger oxidizing agent, as it is more favorable for the substance to undergo reduction.
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01:01
Oxidizing and Reducing Agents
Standard Reduction Potentials
Standard reduction potentials are measured values that indicate the tendency of a chemical species to be reduced, expressed in volts. These values are typically found in tables, such as Appendix E, and allow for the comparison of different substances. By comparing the standard reduction potentials of the substances in each pair, one can determine which is the stronger oxidizing agent.
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01:10Standard Reduction Potentials
Electrochemical Series
The electrochemical series is a list of standard reduction potentials for various half-reactions, arranged from the strongest oxidizing agents to the weakest. This series helps predict the direction of redox reactions and the relative strength of oxidizing and reducing agents. By consulting the electrochemical series, one can easily identify which substance in a pair is more likely to act as an oxidizing agent.
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02:46Electrochemical Cells
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