TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

... the range in concentration of hydrogen ion, metal ion, or other species over which the eye is able to perceive a variation in hue, colour intensity, fluorescence, or other property of a visual indicator arising from the varying ration of the two relevant forms of the indicator. The concentration(e. g. pH).  1, record 1, English, - transition%20interval

Record number: 1, Textual support number: 1 OBS

For an oxidation-reduction indicator the transition interval is the corresponding range in oxidation-reduction potential.  1, record 1, English, - transition%20interval

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

[...] domaine de concentration d'ions hydrogènes, d'ions métalliques ou d'autres espèces dans lequel l'œil est capable de percevoir la variation de teinte, l'intensité de couleur, de fluorescence ou d'une autre propriété d'un indicateur visuel, variation provoquée par une variation des rapports de concentration des deux formes de l'indicateur. Le domaine s'exprime généralement en logarithme décimal négatif de la concentration (par exemple pH).  1, record 1, French, - intervalle%20de%20virage%20d%27un%20indicateur

Record number: 1, Textual support number: 1 OBS

Pour un indicateur d'oxydoréduction, l'intervalle de virage est une différence de potentiels d'oxydoréduction.  1, record 1, French, - intervalle%20de%20virage%20d%27un%20indicateur

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

... inclusion of the soil system in the buffering reactions introduces new sources of buffering which can retard pH depression in the system ... the displacement of aluminum from exchange sites becomes a major source of buffering ...  2, record 2, English, - buffering

Record number: 2, Textual support number: 1 OBS

to buffer: to add a buffer (to a solution).  3, record 2, English, - buffering

Record number: 2, Textual support number: 2 OBS

buffer : any substance in a solution that tends to stabilize the hydrogen ion concentration by neutralizing any added acid or alkali.  3, record 2, English, - buffering

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Action de verser un tampon dans une solution.  1, record 2, French, - tamponnage

Record number: 2, Textual support number: 1 OBS

tampon : mélange de solution dont le pH ne s'altère pratiquement pas au cours d'une dilution.  1, record 2, French, - tamponnage

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A substance which reduces the change in hydrogen ion concentration(pH) that otherwise would be produced when adding acids or bases to a solution.  3, record 3, English, - buffering%20agent

Record number: 3, Textual support number: 1 CONT

Calcium carbonate is the calcium salt of carbonic acid which is used as an anticaking agent and dough strengthener. It is also used as a filler in baking powder and as a mild buffering agent in doughs.  4, record 3, English, - buffering%20agent

Record number: 3, Textual support number: 1 OBS

"Buffering agent" (or "buffer") is a generic term for both salts and acids used to adjust pH. When only solutions are used, these are said to be "buffer solutions".  5, record 3, English, - buffering%20agent

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 DEF

Sel ou acide utilisés dans l'industrie alimentaire pour stabiliser ou modifier le pH des denrées en cours de traitement.  2, record 3, French, - tampon

Record number: 3, Textual support number: 1 CONT

[Les] tampons [tels que] acétate, citrate, phosphates, pyrophosphates de sodium, acide acétique, citrique et lactique [sont utilisés dans les] marmelades, conserves, boissons, confitures, produits amylacés, lait stérilisé, fromages fondus, produits végétaux en boîtes.  3, record 3, French, - tampon

Record number: 3, Textual support number: 1 OBS

«Tampon», terme générique, s'emploie indifféremment pour les sels et les acides. Toutefois, dans le cas précis des solutions, on parlera de «solution tampon» (ou «solution-tampon»).  2, record 3, French, - tampon

Record 3,  Textual support,  Spanish

Record number: 3, Textual support number: 1 CONT

Soluciones amortiguadoras del pH (tampón, «buffer»).  1, record 3, Spanish, - tamp%C3%B3n

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

Carbonation occurs when carbon dioxide is dissolved in water or an aqueous solution. This process is generally represented by the following reaction, where water and gaseous carbon dioxide react to form a dilute solution of carbonic acid. [H2O + CO2=H2CO3] This process yields the "frizz", to carbonated water, the head to beer, and the cork pop and bubbles to champagne and sparkling wine. Carbonation is used to improve both the taste and "texture" of the carbonated consumable. Carbonation is sometimes used for reasons other than consumption, to lower the pH(raise the hydrogen ion concentration) of a water solution...  2, record 4, English, - carbonation

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Les boissons carbonatées exigent du dioxyde de carbone (CO2 gazeux) pour les rendre pétillantes. La carbonatation est une réaction qui a lieu lorsque le dioxyde de carbone est ajouté à un liquide à base d'eau. Le dioxide de carbone réagit avec les molécules d'eau pour en former un acide carbonique selon la réaction suivante : CO2+H2O = H2OCO3 (acide carbonique). C'est cet acide qui picote la langue quand vous buvez une boisson carbonatée.  1, record 4, French, - carbonatation

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

A pathologic condition resulting from accumulation of acid or depletion of the alkaline reserve(bicarbonate content) in the blood and body tissues, and characterized by an increase in hydrogen ion concentration(decrease in pH).  1, record 5, English, - acidosis

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Abaissement du pH du plasma du sang artériel au-dessous de 7,40.  1, record 5, French, - acidose

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Condición de alcalinidad disminuida de la sangre y tejidos caracterizada por respiración dulzona nauseabunda, dolores de cabeza, náuseas, vómitos y perturbaciones de la vista; normalmente se produce como resultado de una producción excesiva de ácido.  2, record 5, Spanish, - acidosis

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A decrease in H-ion [hydrogen ion] concentration of the blood or a rise in pH, irrespective of alterations in the level of bicarbonate ion  1, record 6, English, - alkalemia

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 DEF

[...] pH au-dessus de la normale dans le sang artériel [ou] diminution de la concentration en ions hydrogènes dans le sang artériel.  1, record 6, French, - alcal%C3%A9mie

Record 6,  Textual support,  Spanish

Record number: 6, Textual support number: 1 OBS

disminución de la acidez de sangre y tejidos.  1, record 6, Spanish, - alcalosis

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 CONT

A neutral solution (as pure water) has a pH of 7; ...  2, record 7, English, - neutral%20solution

Record number: 7, Textual support number: 2 CONT

A pH value of 7 corresponds to the hydrogen ion concentration of neutral water.... A solution with a pH value less than 7 is considered acidic. A solution with a pH value greater than 7 is considered basic. If the pH value is exactly 7, such as a solution of sodium chloride in water, it is called neutral.  3, record 7, English, - neutral%20solution

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 CONT

Pour une solution neutre [...] le pH est égal à 7. Pour les solutions acides [...] le pH est inférieur à 7, et, pour les solutions basiques [...] le pH est supérieur à 7.  3, record 7, French, - solution%20neutre

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

Studies done in the past two years have shown that acidic snow resulted in severe depression of pH in streams and surface water of lakes during the spring runoff. The maximum increase in hydrogen ion concentration in the ten streams surveyed to date was up to 15 times the annual average. A spring pH depression is coincident with spring spawning of some species of fish and amphibians.  2, record 8, English, - pH%20depression

Record number: 8, Textual support number: 1 OBS

A pH drop is a sudden pH depression.  8, record 8, English, - pH%20depression

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

La mesure la plus simple de l'acidification des eaux de surface consiste en une comparaison dans le temps et dans l'espace des mesures de pH. S'il y a acidification, il y a baisse du pH. Par contre, cette baisse de pH constitue la dernière phase de l'acidification. Avant la baisse du pH, il y a eu chute du pouvoir tampon, par conséquent un indicateur des effets réels de l'acidification.  5, record 8, French, - abaissement%20du%20pH

Record number: 8, Textual support number: 1 OBS

Une chute de pH est une baisse soudaine du pH.  6, record 8, French, - abaissement%20du%20pH

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

[To maintain] a given desired pH through neutralisation of acidic or basic elements as appropriate.  1, record 9, English, - buffer

Record number: 9, Textual support number: 1 OBS

buffer : Any substance in a solution that tends to stabilize the hydrogen ion concentration by neutralizing any added acid or alkali.  2, record 9, English, - buffer

Record number: 9, Textual support number: 1 CONT

Nature’s complex arrangement of checks and balances has always buffered this slight acidity [of rain]. Mild bases - such as the carbonates that exist in limestone rocks - are able to neutralize the acidic effect.  3, record 9, English, - buffer

Record number: 9, Textual support number: 2 CONT

... the areas which produces pollution are unaffected by it, either because its fallout is far away, or the local lakes and soils are well buffered with alkaline bedrock or chemistry.  4, record 9, English, - buffer

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Tamponner une solution, l'additionner d'une substance convenable pour que son pH varie peu par une dilution ultérieure ou par addition de substances étrangères.  2, record 9, French, - tamponner

Record number: 9, Textual support number: 2 CONT

Le pH des milieux aqueux nécessaires à la vie - l'eau des océans pour la faune aquatique; le sang, la lymphe, etc. pour les animaux supérieurs - ne peut varier que dans d'étroites limites, sous peine de désordres graves pouvant entraîner la mort; à cet effet, ces milieux sont tamponnés par des sels minéraux tels que, phosphates et carbonates, mélangés à divers acides, parmi lesquels l'acide carbonique joue un rôle régulateur important.  3, record 9, French, - tamponner

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

A pH value of 7 corresponds to the hydrogen ion concentration of neutral water.... A solution with a pH value less than 7 is considered acidic. A solution with a pH value greater than 7 is considered basic. If the pH value is exactly 7, such as a solution of sodium chloride in water, it is called neutral.  1, record 10, English, - neutral%20water

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 OBS

Les valeurs du pH de 0 à 14 recouvrent [...] l'intervalle des solutions fortement acides ou solutions fortement basiques. Le pH de l'eau pure, à la température ordinaire, est de 7.  2, record 10, French, - eau%20neutre

Record number: 10, Textual support number: 2 OBS

neutre : Qui n'est ni acide ni basique, dont le pH est égal à 7.  3, record 10, French, - eau%20neutre

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 DEF

A kinetic electrolyte effect arising from the influence of the ionic strength of the solution upon the pre-equilibrium concentration of an ionic species that is involved in a subsequent rate-limiting step of a reaction. A common case encountered in practice is the effect on the concentration of hydrogen ion(acting as catalyst) produced from the ionization of a weak acid in a buffer solution.  1, record 11, English, - secondary%20kinetic%20electrolyte%20effect

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 DEF

[...] effets d'électrolytes ayant pour origine l'effet de la force ionique de la solution sur la concentration d'une espèce qui se trouve en prééquilibre avec les réactifs et qui intervient ultérieurement dans une étape cinétiquement limitante de la réaction. Un exemple, rencontré communément en pratique, est celui de l'effet de la force ionique sur la concentration de l'ion H[indice+] (intervenant comme catalyseur) formé par l'ionisation d'un acide faible en solution tamponnée.  1, record 11, French, - effet%20cin%C3%A9tique%20secondaire%20d%27%C3%A9lectrolytes

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 CONT

The potential is high for widespread environmental degradation, from acid rain and other pollutant deposition, because hydrogen ion concentration(acid, H+) in the aquatic environment is a critical factor controlling most chemical reactions.  1, record 12, English, - pollutant%20deposition

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

Les précipitations n'ont sans doute qu'une influence faible sur l'extension de la pollution atmosphérique. Nous connaissons mal leur rôle sur les retombées des polluants au sol.  1, record 12, French, - retomb%C3%A9es%20des%20polluants

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 CONT

pH is a logarithmic measure of hydrogen ion concentration with a value of 5. 6 being the so-called "clean", or CO2-equilibrium value.  1, record 13, English, - clean

Record 13,  Textual support,  French

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

pH is a logarithmic measure of hydrogen ion concentration with a value of 5. 6 being the so-called "clean", or CO2-equilibrium value.  1, record 14, English, - logarithmic%20measure

Record 14,  Textual support,  French

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

The relative importance to plants of hydrogen ion concentration as distinct from total hydrogen ion deposition in precipitation is not known, but there is clear evidence from Scandinavia and North America indicating the importance of total deposition to soils and aquatic systems.  1, record 15, English, - total%20hydrogen%20ion%20deposition

Record 15,  Textual support,  French

Record 15,  Textual support,  Spanish