TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

Of a chemical species that has the properties of a base.  2, record 1, English, - basic

Record number: 1, Textual support number: 1 OBS

A base in chemistry is a substance that can accept hydrogen ions or more generally, donate electron pairs. A soluble base is referred to as an alkali if it contains and releases hydroxide ions(OH−) quantitatively. The Brønsted-Lowry theory defines bases as proton(hydrogen ion) acceptors, while the more general Lewis theory defines bases as electron pair donors, allowing other Lewis acids than protons to be included.  3, record 1, English, - basic

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Se dit des substances pouvant libérer des anions OH^-.  2, record 1, French, - basique

Record number: 1, Textual support number: 1 OBS

L'adjectif basique est correctement utilisé en français pour désigner un sel basique qui peut formellement libérer un anion OH^-. Il est fortement déconseillé de l'utiliser en français dans le cas d'un sel acide contenant un ou plusieurs cations H⁺; on doit donc éviter les noms tels que «phosphate de sodium dibasique» et «phosphate basique de disodium» qui sont des anglicismes de mauvais aloi.  3, record 1, French, - basique

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

hydroxides: Negatively charged group composed of one oxygen atom and one hydrogen atom.  6, record 2, English, - hydroxide

Record number: 2, Textual support number: 1 OBS

hydroxide: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).  6, record 2, English, - hydroxide

Record number: 2, Textual support number: 2 OBS

Chemical formula: HO^- or OH^-  6, record 2, English, - hydroxide

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

hydroxydes : Groupe, chargé négativement, composé d'un atome d'oxygène et d'un atome d'hydrogène.  1, record 2, French, - hydroxyde

Record number: 2, Textual support number: 1 OBS

hydroxyde : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).  1, record 2, French, - hydroxyde

Record number: 2, Textual support number: 2 OBS

pluriel : des ions hydroxyde.  7, record 2, French, - hydroxyde

Record number: 2, Textual support number: 3 OBS

Formule chimique : HO^- ou OH^-  1, record 2, French, - hydroxyde

Record 2,  Textual support,  Spanish

Record number: 2, Textual support number: 1 OBS

Fórmula química: HO^- or OH^-  2, record 2, Spanish, - hidroxili%C3%B3n

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Oxygen concentration in water can be measured by means of an oxygen-sensing electrode, spectrophotometrically, and titrimetrically. This experiment uses a titration technique which... involves several oxidation-reduction reactions, the first of which involves the oxidation of manganese(II) ion by dissolved oxygen to form manganese(III) hydroxide.  4, record 3, English, - manganese%28III%29%20hydroxide

Record number: 3, Textual support number: 1 OBS

manganic [obsolete formulation]: Of, pertaining to, or containing manganese in the trivalent state ...  5, record 3, English, - manganese%28III%29%20hydroxide

Record number: 3, Textual support number: 2 OBS

Chemical formula: MnO(OH)₂  6, record 3, English, - manganese%28III%29%20hydroxide

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Démanganisation. La précipitation du manganèse sous forme d'hydroxyde manganique qui nécessite un pH supérieur à 9,0 n'est pas de pratique courante; on doit avoir recours à des techniques spéciales.  4, record 3, French, - hydroxyde%20de%20mangan%C3%A8se%28III%29

Record number: 3, Textual support number: 2 CONT

Écrire la demi-réaction redox entre l'ion manganèse(II) et l'hydroxyde de manganèse(III).  5, record 3, French, - hydroxyde%20de%20mangan%C3%A8se%28III%29

Record number: 3, Textual support number: 1 OBS

Formule chimique : MnO(OH)₂  6, record 3, French, - hydroxyde%20de%20mangan%C3%A8se%28III%29

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A substance that can donate an electron pair; examples are the hydroxide ion, OH-, and ammonia NH₃.  2, record 4, English, - Lewis%20base

Record number: 4, Textual support number: 1 OBS

... the term Lewis acid will be employed exclusively to refer to electron-pair acceptors. ... The definition of Lewis acids and bases in terms of gain or loss of electrons should not be confused with the definition of oxidizing and reducing agents in similar terms.  3, record 4, English, - Lewis%20base

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Composé donneur de doublet.  3, record 4, French, - base%20de%20Lewis

Record number: 4, Textual support number: 1 CONT

Les acides de Lewis, accepteurs d'électrons, sont souvent nommés électrophiles; les bases de Lewis se fixent sur la région des particules acides pauvre en électrons, et par conséquent où l'influence positive du noyau se fait davantage sentir : on les nomme nucléophiles.  2, record 4, French, - base%20de%20Lewis

Record number: 4, Textual support number: 1 PHR

Base de Lewis hydrophobe.  4, record 4, French, - base%20de%20Lewis

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

A modified definition of bases also seemed to be required that would be applicable to nonaqueous solutions, in which the anion... produced is not the hydroxide ion, as is the case in water, but varies from solvent to solvent...  1, record 5, English, - nonaqueous%20solution

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 CONT

L'électrode à hydrogène peut fonctionner non seulement dans l'eau, mais aussi dans les solutions non aqueuses où elle permet d'établir des échelles de pH.  2, record 5, French, - solution%20non%20aqueuse

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The process for dechlorinating chlorinated aromatics such as polychlorinated biphenyls (PCBs) entrained in soil ... involves use of a particular rotary kiln processor and a dechlorinating reagent derived from the reaction of alkali metal hydroxide and a glycolate, preferably polyethylene glycol.  1, record 6, English, - alkali%20metal%20hydroxide

Record number: 6, Textual support number: 2 CONT

In the presence of an alkali hydroxide, chlorine is reduced to the chloride ion by hydrogen peroxide, and the excess alkali hydroxide is back-titrated with acid.  3, record 6, English, - alkali%20metal%20hydroxide

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

Le procédé [de décolonisation des aromatiques chlorurés comme les biphényles polychlorés] implique l'utilisation d'un processeur particulier de four rotatif et d'un agent de décolonisation dérivé de la réaction d'un hydroxyde alcalin de métal et d'un glycol, de préférence un glycol polyéthylène.  2, record 6, French, - hydroxyde%20alcalin

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

Municipal wastewater treatment chemicals include calcium oxide; alum; activated alum, carbon, and silica; polymers; ion exchange resins; sodium hydroxide; chlorine; ozone; and corrosion inhibitors.  2, record 7, English, - activated%20alum

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Mélange de sulfate [double d'aluminium] et de charbon actif finement divisé.  3, record 7, French, - alun%20activ%C3%A9

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

The anion produced by proton loss from a solvent molecule. For example, the hydroxide ion is the lyate ion of water.  1, record 8, English, - lyate%20ion

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Anion issu d'une molécule de solvant par perte d'un proton. Par exemple, l'ion hydroxyde est l'ion lyate de l'eau.  1, record 8, French, - ion%20lyate

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

The ionic form of an ion exchanger in which the counter-ions are neither hydrogen nor hydroxide ions.  1, record 9, English, - salt%20form%20of%20an%20ion%20exchanger

Record number: 9, Textual support number: 1 OBS

When only one valence is possible for the counter-ion, or its exact form or charge is not known, the symbol or the name of the counter-ion without charge is used e.g. sodium form, Na form; tetramethylammonium form; orthophosphate form. When one of two or more possible forms is exclusively present, the oxidation state may be indicated by Roman numerals, e.g. Fe^II form, Fe^III form.  1, record 9, English, - salt%20form%20of%20an%20ion%20exchanger

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

[...] forme ionique d'un échangeur d'ions dans laquelle les contre-ions ne sont ni l'ion hydrogène ni l'ion hydroxyde.  1, record 9, French, - forme%20saline%20d%27un%20%C3%A9changeur%20d%27ions

Record number: 9, Textual support number: 1 OBS

Quand le contre-ion ne peut posséder qu'une seule valence ou encore si sa nature exacte ou sa charge n'est pas connue, on utilise le symbole ou le nom du contre-ion sans charge; par exemple, forme sodium, forme Na, forme tétraméthylammonium, forme orthophosphate. Quand une des deux ou plusieurs formes possibles sont présentes, l'état d'oxydation peut être indiqué en chiffre romain; par exemple, forme Fe(II), forme Fe(III).  1, record 9, French, - forme%20saline%20d%27un%20%C3%A9changeur%20d%27ions

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

The maximum ability of a substance to accept free protons, thus contributing to a decrease in the concentration of free protons in solution or to the stability of a chemical system upon the addition of acid.  1, record 10, English, - acid%20neutralizing%20capacity

Record number: 10, Textual support number: 1 CONT

The acid neutralizing capacity(ANC) is the sum of all the bases that can be titrated with a strong acid to a predefined equivalence point. The acid neutralizing capacity pertains to any substance capable of interacting with the hydrogen ion. These substances include the dissolved carbonates and hydroxide ion which comprise alkalinity, plus any other protolyte, adsorptive surface, or adsorptive substance(i. e. biological organisms).  1, record 10, English, - acid%20neutralizing%20capacity

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 DEF

Résistance qu'un milieu ou qu'une substance chimique, soumis à des apports acides, peut opposer à l'acidification anthropique.  6, record 10, French, - potentiel%20de%20neutralisation%20de%20l%27acide

Record number: 10, Textual support number: 1 CONT

Le potentiel de neutralisation de l'acide, PNA (éq/mol minéral) pour un minéral carbonaté n'est guère différent de celui d'un minéral siliceux, quoique la cinétique de réaction de l'ion H+ avec les carbonates soit très rapide.  7, record 10, French, - potentiel%20de%20neutralisation%20de%20l%27acide

Record number: 10, Textual support number: 1 OBS

Pour de plus amples renseignements sur cette notion, consulter le cahier de néologie sur les pluies acides (OLFNE 1985 no 40-41).  8, record 10, French, - potentiel%20de%20neutralisation%20de%20l%27acide

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

... although the hydroxide ion(OH-) is always a much stronger base than ammonia(NH₃) in reactions with proton acids, in reactions with the Lewis acid Ag+, the complex Ag(NH₃) +₂ is fairly stable, whereas AgOH is completely dissociated.  1, record 11, English, - stable%20complex

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

Les solutions tampons servent à chaque instant en analyse et avant tout pour fixer le pH entre deux valeurs bien connues, pour effectuer une recherche qualitative, une précipitation, une réduction ou pour réaliser un complexe stable.  1, record 11, French, - complexe%20stable

Record 11,  Textual support,  Spanish