alkali

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Related to Alcali: alkali, Alkali metals, Alkaline water

al·ka·li

, pl.

alkalies

,

al·ka·lis

(al'kă-lī, al'kă-līz),
1. A strongly basic substance yielding hydroxide ions (OH- in solution); for example, sodium hydroxide, potassium hydroxide.
2. Synonym(s): base (3)
3. Synonym(s): alkali metal
[Ar., al, the, + qalīy, soda ash]

alkali

/al·ka·li/ (al´kah-li) any of a class of compounds with pH greater than 7.0, which form soluble soaps with fatty acids, turn red litmus blue, and form soluble carbonates, e.g., hydroxides or carbonates of sodium or potassium.

alkali

[al′kəlī]
Etymology: Ar, al + galiy, wood ash
a compound with the chemical characteristics of a base. Usually used with reference to hydroxides of Group I metals and ammonium, alkalis combine with fatty acids to form soaps, turn red litmus blue, and enter into reactions with carbon dioxide that form water-soluble carbonates. See also acid, base. -alkaline, adj., alkalinity, n., alkalinize, alkalize, v.

al·ka·li

, pl. alkalies, pl. alkalis (al'kă-lī, -līz)
1. A strongly basic substance yielding hydroxide ions (OH-) in solution; e.g., sodium hydroxide, potassium hydroxide.
2. Synonym(s): base (3) .
3. Synonym(s): alkali metal.
[Ar., al, the, + qalīy, soda ash]

alkali

a soluble BASE or a solution of a base.

alkali

strongly basic substance yielding hydroxide (OH-) ions in solution, e.g. potassium hydroxide (KOH); sodium hydroxide (NaOH)

alkali,

n a compound able to form hydroxyl ions (OH) when dissolved in aqueous solutions. See also base.

al·ka·li

, pl. alkalies, pl. alkalis (al'kă-lī, -līz)
1. A strongly basic substance yielding hydroxide ions (OH-) in solution; e.g., sodium hydroxide, potassium hydroxide.
2. Synonym(s): base (3) .
3. Synonym(s): alkali metal.
[Ar., al, the, + qalīy, soda ash]

alkali (al´kəlī),

n a strong water-soluble base. A chemical substance that, in aqueous solution, undergoes dissociation, resulting in the formation of hydroxyl (OH) ions.

alkali

any one of a class of compounds such as sodium hydroxide that form salts with acids and soaps with fats; a base, or substance capable of neutralizing acids. Other properties include a bitter taste and the ability to turn litmus paper from red to blue. Alkalis play a vital role in maintaining the normal functioning of the body chemistry. See also acid-base balance, alkaline, base.

alkali disease
see selenium poisoning.
alkali reserve
the ability of the combined buffer systems of the blood to neutralize acid. The pH of the blood normally is slightly on the alkaline side, between 7.35 and 7.45. Since the principal buffer in the blood is bicarbonate, the alkali reserve is essentially represented by the plasma bicarbonate concentration. However, hemoglobin, phosphates and other bases also act as buffers. A lowered alkali reserve means a state of acidosis; increased reserve indicates alkalosis. Alkali reserve is measured by the combining power of carbon dioxide, which is the amount of carbon dioxide that can be bound as bicarbonate by the blood.
References in periodicals archive ?
2] y es uno de los mejores caminos para la produccion de alcali en la cavidad oral.
En el Grupo B se incluyeron 50% de los aislados analizados conformado por microsimbiontes de crecimiento lento productores de alcali, donde dos aislados autoctonos NB 2.
Es evidente que utilizar solo un sistema biologico no convencional como es el SBR no es suficiente para mejorar completamente la calidad del agua residual tratada, por lo que se recomienda propiciar la precipitacion de parte del cromo antes de alimentar al SBR, mediante la adicion de un alcali (NaOH, MgO, CaC[O.
En Babilonia se descubrio que al hervir aceite con un alcali como la potasa se obtenia una especie de cera que ayudaba a eliminar la suciedad.
La Transesterificacion (4) consiste en la mezcla del aceite vegetal o grasas con un alcohol (generalmente metanol) y un alcali (soda caustica).
5% masculinos, con IC principalmente por alcali (23% limpiador de hornos, 36.
El segundo polisacarido mas abundante en plantas esta constituido por hemicelulosa, este es soluble en alcali y esta estrechamente relacionado con la celulosa.
Frederick Miescher estudia la quimica de los leucocitos y descubre que, si se anade acido y alcali a los nucleos celulares, se produce un precipitado gris al que llama <<nucleina>> el cual, 80 anos despues, se renombraria como <<acido desoxirribonucleico>> o ADN
Aquella es la redoma encantada, donde esta en forma de alcali volatil el Marques de Villena; restituyamos al mundo un hombre de bien: no abundan hoy tanto que uno mas nos estorbe.
1983) explican que esta consiste en que la quitina es suspendida en el alcali y la suspension es refrigerada con hielo para disolver la quitina en la solucion.