Chemistry
High School (11–12)
Electrochemistry › Conductance, Electrolysis and BatteriesElectrochemistry › Galvanic Cells, Electrode Potential and the Nernst EquationChapter 22Contains Standard contentElectrochemistry
A phone battery, a rusting bridge and the silver plating on a spoon all depend on electrons moving through a circuit while a reaction runs. In this chapter you learn how a cell's emf is linked to Gibbs energy and to the Nernst equation, how electrolytes conduct, and what Faraday's laws say about electrolysis. You also meet batteries, fuel cells and corrosion. Python computes cell potentials and the charge needed to deposit a metal.
Part of Chemistry · High School (11–12) (chapter 22)
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Cell EMF and the Nernst Equation
A galvanic cell built from two half-cells. Cell notation, emf from standard electrode potentials, the link between emf, Gibbs energy and the equilibrium constant, and the Nernst equation for any concentration.
Conductance of Electrolytic Solutions
How ionic solutions carry current. Resistance and conductivity, molar conductivity and how it changes with concentration, and Kohlrausch's law for strong and weak electrolytes.