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Key Terms

Chemistry 2eKey Terms

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common ion effect: effect on equilibrium when a substance with an ion in common with the dissolved species is added to the solution; causes a decrease in the solubility of an ionic species, or a decrease in the ionization of a weak acid or base

complex ion: ion consisting of a central atom surrounding molecules or ions called ligands via coordinate covalent bonds

coordinate covalent bond: (also, dative bond) covalent bond in which both electrons originated from the same atom

coupled equilibria: system characterized the simultaneous establishment of two or more equilibrium reactions sharing one or more reactant or product

dissociation constant: (K_d) equilibrium constant for the decomposition of a complex ion into its components

formation constant: (K_f) (also, stability constant) equilibrium constant for the formation of a complex ion from its components

Lewis acid: any species that can accept a pair of electrons and form a coordinate covalent bond

Lewis acid-base adduct: compound or ion that contains a coordinate covalent bond between a Lewis acid and a Lewis base

Lewis acid-base chemistry: reactions involving the formation of coordinate covalent bonds

Lewis base: any species that can donate a pair of electrons and form a coordinate covalent bond

ligand: molecule or ion acting as a Lewis base in complex ion formation; bonds to the central atom of the complex

molar solubility: solubility of a compound expressed in units of moles per liter (mol/L)

selective precipitation: process in which ions are separated using differences in their solubility with a given precipitating reagent

solubility product constant (K_sp): equilibrium constant for the dissolution of an ionic compound

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- Authors: Paul Flowers, Klaus Theopold, Richard Langley, William R. Robinson, PhD
- Publisher/website: OpenStax
- Book title: Chemistry 2e
- Publication date: Feb 14, 2019
- Location: Houston, Texas
- Book URL: https://openstax.org/books/chemistry-2e/pages/1-introduction
- Section URL: https://openstax.org/books/chemistry-2e/pages/15-key-terms

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