Domanda del libro di testo
Using standard reduction potentials (Appendix E), calculate the standard emf for each of the following reactions: (c) Fe1s2 + 2 Fe3+1aq2 ¡ 3 Fe2+1aq2
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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 36c
A voltaic cell that uses the reaction PdCl42-(aq) + Cd(s) → Pd(s) + 4 Cl-(aq) + Cd2+(aq) has a measured standard cell potential of +1.03 V. (c) Sketch the voltaic cell, label the anode and cathode, and indicate the direction of electron flow
Guida verificata passo dopo passo1
Identify the oxidation and reduction half-reactions. In this reaction, Cd(s) is oxidized to Cd2+(aq), and PdCl4^2-(aq) is reduced to Pd(s).
Determine the anode and cathode. The anode is where oxidation occurs, so Cd(s) is the anode. The cathode is where reduction occurs, so PdCl4^2-(aq) is the cathode.
Sketch the voltaic cell. Draw two compartments: one for the anode and one for the cathode. Connect them with a salt bridge to allow the flow of ions.
Label the anode and cathode in your sketch. The anode (Cd) should be on the left, and the cathode (Pd) should be on the right.
Indicate the direction of electron flow. Electrons flow from the anode to the cathode through the external circuit. In this case, electrons flow from the Cd electrode to the Pd electrode.
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Voltaic Cell Components
A voltaic cell, also known as a galvanic cell, consists of two electrodes: the anode and the cathode, immersed in an electrolyte solution. The anode is where oxidation occurs, releasing electrons, while the cathode is where reduction takes place, accepting electrons. Understanding these components is essential for sketching the cell and labeling its parts correctly.
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03:55
Galvanic Cell Components
Standard Cell Potential
The standard cell potential (E°) is a measure of the voltage produced by a voltaic cell under standard conditions (1 M concentration, 1 atm pressure, and 25°C). It indicates the driving force behind the electrochemical reaction, with a positive value suggesting a spontaneous reaction. In this case, the +1.03 V indicates that the reaction is favorable and helps determine the direction of electron flow.
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01:27Standard Cell Potential
Electron Flow Direction
In a voltaic cell, electrons flow from the anode to the cathode through an external circuit. This flow occurs because the anode is negatively charged (due to oxidation) and the cathode is positively charged (due to reduction). Understanding this flow is crucial for accurately sketching the cell and indicating the movement of electrons during the electrochemical reaction.
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04:44Electron Geometry
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Domanda del libro di testo
A voltaic cell that uses the reaction PdCl42-(aq) + Cd(s) → Pd(s) + 4 Cl-(aq) + Cd2+(aq) has a measured standard cell potential of +1.03 V. (a) Write the two half-cell reactions.
475
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Domanda del libro di testo
Using standard reduction potentials (Appendix E), calculate the standard emf for each of the following reactions: (a) Cl21g2 + 2 I-1aq2 ¡ 2 Cl-1aq2 + I21s2
487
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Domanda del libro di testo
A voltaic cell that uses the reaction PdCl42-(aq) + Cd(s) → Pd(s) + 4 Cl-(aq) + Cd2+(aq) has a measured standard cell potential of +1.03 V. (b) By using data from Appendix E, determine E°red for the reaction involving Pd.
438
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Domanda del libro di testo
Using standard reduction potentials (Appendix E), calculate the standard emf for each of the following reactions: (b) Ni1s2 + 2 Ce4+1aq2 ¡ Ni2+1aq2 + 2 Ce3+1aq2
800
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