"Electrochemistry is the branch of physical chemistry concerned with the relationship between electrical potential difference and identifiable chemical change."
It studies the relationship between electricity and chemical reactions.
Redox Reaction: A chemical reaction in which there is a transfer of electrons between two species.
Galvanic Cells: An electrochemical cell that converts chemical energy into electrical energy.
Electrodes: Electrodes are conductive materials that are used as the interface between the electrolyte and the electrical circuit.
Half-cell Potentials: The potential difference between a reduction and oxidation half-reaction at standard conditions.
Electrolytes: An electrolyte is a substance that produces ions when dissolved in a polar solvent such as water.
Nernst Equation: The Nernst equation is an equation that relates the Gibbs free energy change of a reaction to the voltage of an electrochemical cell.
Concentration cells: A concentration cell is an electrochemical cell in which the two half-cells are identical except for the concentrations of the electrolytes.
Faraday's Law of Electrolysis: Faraday's law of electrolysis states that the amount of substance produced in an electrolysis reaction is proportional to the quantity of charge passed through the electrolyte.
Standard Hydrogen Electrode: The standard hydrogen electrode is a reference electrode used to measure the standard electrode potentials of other half-cells.
Electrochemical Series: The electrochemical series is a list of half-cells arranged in order of their standard electrode potentials.
"These reactions involve electrons moving via an electronically-conducting phase between electrodes separated by an ionically conducting and electronically insulating electrolyte."
"Electrons moving via an electronically-conducting phase (typically an external electrical circuit) between electrodes separated by an ionically conducting and electronically insulating electrolyte."
"Not necessarily, as in electroless plating."
"In electrochemical reactions, electrons are not transferred directly between atoms, ions, or molecules, but via the aforementioned electronically-conducting circuit."
"When a chemical reaction is driven by an electrical potential difference, it is called electrolysis."
"If a potential difference results from a chemical reaction, as in an electric battery or fuel cell, it is called an electrochemical reaction."
"Electrolytes are ionically conducting and electronically insulating substances that separate the electrodes."
"Electrons moving via an electronically-conducting phase between electrodes separated by an ionically conducting and electronically insulating electrolyte."
"The phenomenon of electrons moving via an electronically-conducting circuit distinguishes an electrochemical reaction from a conventional chemical reaction."
"Physical chemistry is concerned with the relationship between electrical potential difference and identifiable chemical change."
"Identifiable chemical change is associated with electrical potential difference in electrochemistry."
"No, electrochemical reactions require an electrical potential difference to occur."
"Electrons move via an electronically-conducting phase (typically an external electrical circuit) between electrodes."
"Yes, electrochemical reactions can occur in a solution."
"Electroless plating is an example of an electrochemical reaction that does not necessarily require an external electrical circuit."
"Electrons are not transferred directly between atoms, ions, or molecules in electrochemical reactions."
"Yes, chemical reactions that result in a potential difference can be used to generate electrical energy in electric batteries or fuel cells."
"The electrodes in electrochemical reactions are separated by an ionically conducting and electronically insulating electrolyte."
"Electrochemistry explores the relationship between electrical potential difference and chemical change."