Domanda del libro di testo
What reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (c) A silver wire is immersed in an aqueous solution of NiCl2.
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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 83d
What reaction can occur, if any, when the following experiments are carried out under standard-state conditions? (d) Hydrogen gas is bubbled through aqueous Cd(NO3)2.
Guida verificata passo dopo passo1
Identify the components involved in the reaction: hydrogen gas (H2) and cadmium nitrate (Cd(NO3)2).
Determine the possible reaction: Hydrogen gas can potentially reduce cadmium ions (Cd^2+) to cadmium metal (Cd) if it is a favorable redox reaction.
Write the half-reactions for the reduction of Cd^2+ and the oxidation of H2: Cd^2+ + 2e^- → Cd and H2 → 2H^+ + 2e^-.
Use the standard reduction potentials to determine if the reaction is spontaneous: Compare the reduction potential of Cd^2+ to that of H2.
Conclude whether the reaction will occur by checking if the overall cell potential (E°cell) is positive, indicating a spontaneous reaction.
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Standard-State Conditions
Standard-state conditions refer to a set of specific conditions used to measure the properties of substances. These typically include a temperature of 25°C (298 K), a pressure of 1 atm, and concentrations of 1 M for solutions. Understanding these conditions is crucial for predicting the behavior of chemical reactions and comparing thermodynamic data.
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01:10
Standard Reduction Potentials
Redox Reactions
Redox reactions, or oxidation-reduction reactions, involve the transfer of electrons between species. In these reactions, one substance is oxidized (loses electrons) while another is reduced (gains electrons). Identifying the oxidation states of the reactants is essential to determine if a redox reaction occurs, such as when hydrogen gas interacts with metal ions.
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03:12Identifying Redox Reactions
Electrochemical Series
The electrochemical series is a list of standard electrode potentials for various half-reactions, which helps predict the feasibility of redox reactions. Metals higher in the series are more likely to be reduced, while those lower are more likely to be oxidized. This series is instrumental in determining whether hydrogen gas can reduce cadmium ions in the given reaction.
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02:46Electrochemical Cells
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