Domanda del libro di testo
What conditions must be met for a cell potential E to qualify as a standard cell potential E°?
411
views
Ch.19 - Electrochemistry
McMurry8th EditionChemistryISBN: 9781292336145
Non è quello che usi tu?Cambia libro di testoScegli un libro di testo diverso
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 63
A galvanic cell is constructed from a Zn/Zn2+ half-cell (anode) and a Cl2/Cl- half-cell (cathode). (c) Give the shorthand notation for the cell.
Guida verificata passo dopo passo1
Identify the anode and cathode reactions. The anode reaction involves the oxidation of Zn to Zn^{2+}, and the cathode reaction involves the reduction of Cl_2 to Cl^-.
Write the half-reactions for the anode and cathode. The anode half-reaction is Zn \(\rightarrow\) Zn^{2+} + 2e^-, and the cathode half-reaction is Cl_2 + 2e^- \(\rightarrow\) 2Cl^-.
Determine the direction of electron flow. Electrons flow from the anode to the cathode in a galvanic cell.
Write the cell notation. The anode is written on the left and the cathode on the right, separated by a double vertical line representing the salt bridge.
Combine the components into the shorthand notation: Zn | Zn^{2+} || Cl_2 | Cl^-.
Concetti chiave
Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.
Galvanic Cell
A galvanic cell, also known as a voltaic cell, is an electrochemical cell that converts chemical energy into electrical energy through spontaneous redox reactions. It consists of two half-cells, each containing an electrode and an electrolyte, where oxidation occurs at the anode and reduction occurs at the cathode. The flow of electrons from the anode to the cathode generates an electric current.
Video consigliato:
Percorso guidato
01:08
The Galvanic Cell
Half-Cell Notation
Half-cell notation is a standardized way to represent the components of an electrochemical cell. It typically includes the anode and cathode separated by a double vertical line, which indicates the salt bridge or porous barrier. Each half-cell notation includes the metal or gas involved, its ion form, and their respective concentrations, allowing for a clear understanding of the cell's components and reactions.
Video consigliato:
Percorso guidato
06:23Cell Notation
Standard Electrode Potential
Standard electrode potential is a measure of the tendency of a chemical species to be reduced, measured under standard conditions (1 M concentration, 1 atm pressure, and 25°C). It is expressed in volts and is crucial for determining the overall cell potential of a galvanic cell. The difference in standard electrode potentials between the anode and cathode indicates the direction of electron flow and the cell's voltage output.
Video consigliato:
Percorso guidato
01:27Standard Cell Potential
Pratica correlata
Domanda del libro di testo
An H2/H+ half-cell (anode) and an Ag+/Ag half cell (cathode) are connected by a wire and a salt bridge. (b) Write balanced equations for the electrode and overall cell reactions.
1273
views
Domanda del libro di testo
An H2/H+ half-cell (anode) and an Ag+/Ag half cell (cathode) are connected by a wire and a salt bridge. (a) Sketch the cell, indicating the direction of electron and ion flow.
734
views
Domanda del libro di testo
Arrange the following oxidizing agents in order of increasing strength under standard-state conditions: Br2(aq), MnO4+(aq), Sn4+(aq).
427
views
Domanda del libro di testo
Write balanced equations for the electrode and overall cell reactions in the following galvanic cells. Sketch each cell, labeling the anode and cathode and showing the direction of electron and ion flow.
(a) .
986
views
Domanda del libro di testo
An H2/H+ half-cell (anode) and an Ag+/Ag half cell (cathode) are connected by a wire and a salt bridge. (c) Give the shorthand notation for the cell.
517
views