Search
- Filter Results
- Location
- Classification
- Include attachments
- https://chem.libretexts.org/Bookshelves/General_Chemistry/Map%3A_Chemistry_-_The_Central_Science_(Brown_et_al.)/20%3A_Electrochemistry/20.03%3A_Voltaic_CellsA galvanic (voltaic) cell uses the energy released during a spontaneous redox reaction to generate electricity, whereas an electrolytic cell consumes electrical energy from an external source to force...A galvanic (voltaic) cell uses the energy released during a spontaneous redox reaction to generate electricity, whereas an electrolytic cell consumes electrical energy from an external source to force a reaction to occur. Electrochemistry is the study of the relationship between electricity and chemical reactions. The oxidation–reduction reaction that occurs during an electrochemical process consists of two half-reactions, one representing the oxidation process and one the reduction process.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/23%3A_Electrochemistry/23.06%3A_Calculating_Standard_Cell_PotentialsThis page discusses the corrosion of steel and the use of galvanized nails to prevent rust through zinc coating. It explores electrochemical cells, showing the calculation of cell potential using redu...This page discusses the corrosion of steel and the use of galvanized nails to prevent rust through zinc coating. It explores electrochemical cells, showing the calculation of cell potential using reduction potentials from a standard table, including an example with tin and silver ions resulting in a spontaneous reaction (+0.94 V).
- https://chem.libretexts.org/Bookshelves/Analytical_Chemistry/Instrumental_Analysis_(LibreTexts)/22%3A_An_Introduction_to_Electroanalytical_Chemistry/22.01%3A_Electrochemical_CellsThe electrochemical cell consists of two half-cells, each of which contains an electrode immersed in a solution of ions whose activities determine the electrode’s potential. A salt bridge that contain...The electrochemical cell consists of two half-cells, each of which contains an electrode immersed in a solution of ions whose activities determine the electrode’s potential. A salt bridge that contains an inert electrolyte, such as KCl, connects the two half-cells. The ends of the salt bridge are fixed with porous frits, which allow the electrolyte’s ions to move freely between the half-cells and the salt bridge. This movement of ions in the salt bridge completes the electrical circuit.
- https://chem.libretexts.org/Courses/Los_Angeles_Trade_Technical_College/Analytical_Chemistry/2%3A_Analytical_Chemistry_2.0_(Harvey)/12%3A_Electrochemical_Methods/12.4%3A_Voltammetric_MethodsIn voltammetry we apply a time-dependent potential to an electrochemical cell and measure the resulting current as a function of that potential. We call the resulting plot of current versus applied po...In voltammetry we apply a time-dependent potential to an electrochemical cell and measure the resulting current as a function of that potential. We call the resulting plot of current versus applied potential a voltammogram, and it is the electrochemical equivalent of a spectrum in spectroscopy, providing quantitative and qualitative information about the species involved in the oxidation or reduction reaction.
- https://chem.libretexts.org/Bookshelves/Physical_and_Theoretical_Chemistry_Textbook_Maps/Physical_Chemistry_(Fleming)/10%3A_Electrochemistry/10.02%3A_The_connection_to_GThe text explains the relationship between Gibbs free energy change (??G) and the cell potential in an electrochemical cell. It describes how ΔG indicates the maximum non p-V work and relate...The text explains the relationship between Gibbs free energy change (??G) and the cell potential in an electrochemical cell. It describes how ΔG indicates the maximum non p-V work and relates it to the standard cell potential. The Nernst equation is introduced to calculate cell potential considering the activities of reactants and products, detailing its application in Volta???s original battery.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/23%3A_Electrochemistry/23.04%3A_Electrical_PotentialThis page explains how a voltmeter measures electric current indirectly through established galvanometer principles. It discusses electrical potential in voltaic cells, emphasizing that it's measured ...This page explains how a voltmeter measures electric current indirectly through established galvanometer principles. It discusses electrical potential in voltaic cells, emphasizing that it's measured in volts and depends on half-cell differences. A complete redox reaction, illustrated by a zinc-copper cell, determines this potential, with copper ions being reduced due to their higher reduction potential compared to zinc.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/23%3A_Electrochemistry/23.02%3A_Electrochemical_ReactionThis page explains that metal sculptures corrode through redox reactions influenced by the elements. It discusses electrochemistry, which converts chemical to electrical energy, seen in batteries. It ...This page explains that metal sculptures corrode through redox reactions influenced by the elements. It discusses electrochemistry, which converts chemical to electrical energy, seen in batteries. It highlights that direct redox reactions, like those between zinc and copper ions, require separation into oxidation and reduction to perform work in electrochemical cells. These cells feature a solution for reactions, a conductor for electron transfer, and a salt bridge for ion movement.
- https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/23%3A_Electrochemistry/23.03%3A_Voltaic_CellsThis page discusses Luigi Galvani's 18th-century discovery of electrical effects in frog legs, leading to advancements in nerve conduction research. It describes a voltaic cell, an electrochemical dev...This page discusses Luigi Galvani's 18th-century discovery of electrical effects in frog legs, leading to advancements in nerve conduction research. It describes a voltaic cell, an electrochemical device that generates electrical energy via spontaneous redox reactions, including its two half-cells: the anode, which undergoes oxidation (losing zinc), and the cathode, which undergoes reduction (gaining copper).
- https://chem.libretexts.org/Courses/Bellarmine_University/BU%3A_Chem_104_(Christianson)/Phase_3%3A_Harnessing_Chemical_Power/10%3A_Electrochemistry/10.2%3A_Voltaic_CellsA galvanic (voltaic) cell uses the energy released during a spontaneous redox reaction to generate electricity, whereas an electrolytic cell consumes electrical energy from an external source to force...A galvanic (voltaic) cell uses the energy released during a spontaneous redox reaction to generate electricity, whereas an electrolytic cell consumes electrical energy from an external source to force a reaction to occur. Electrochemistry is the study of the relationship between electricity and chemical reactions. The oxidation–reduction reaction that occurs during an electrochemical process consists of two half-reactions, one representing the oxidation process and one the reduction process.
- https://chem.libretexts.org/Courses/Prince_Georges_Community_College/CHEM_2000%3A_Chemistry_for_Engineers_(Sinex)/Unit_6%3A_Thermo_and_Electrochemistry/Chapter_17%3A_Electrochemistry/Chapter_17.1%3A_Describing_Electrochemical_CellsThe ions in the salt bridge are selected so that they do not interfere with the electrochemical reaction by being oxidized or reduced themselves or by forming a precipitate or complex; commonly used c...The ions in the salt bridge are selected so that they do not interfere with the electrochemical reaction by being oxidized or reduced themselves or by forming a precipitate or complex; commonly used cations and anions are Na + or K + and NO 3 − or SO 4 2− , respectively. (The ions in the salt bridge do not have to be the same as those in the redox couple in either compartment.) When the circuit is closed, a spontaneous reaction occurs: zinc metal is oxidized to Zn 2+ ions at the zinc electrode …
- https://chem.libretexts.org/Courses/Stanford_Online_High_School/TEN2B-Voltage/03%3A_Potential/3.03%3A_Voltaic_CellsA galvanic (voltaic) cell uses the energy released during a spontaneous redox reaction to generate electricity, whereas an electrolytic cell consumes electrical energy from an external source to force...A galvanic (voltaic) cell uses the energy released during a spontaneous redox reaction to generate electricity, whereas an electrolytic cell consumes electrical energy from an external source to force a reaction to occur. Electrochemistry is the study of the relationship between electricity and chemical reactions. The oxidation–reduction reaction that occurs during an electrochemical process consists of two half-reactions, one representing the oxidation process and one the reduction process.
