alkaline reaction

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al·ka·line re·ac·tion

1. any test by which an alkaline reaction is recognized, such as the change of red litmus paper to blue;
2. an excess of hydroxide ions over hydrogen ions in aqueous solution as indicated by a pH value exceeding 7 (at 22°C). Compare: dissociation constant of water.
Synonym(s): basic reaction
Farlex Partner Medical Dictionary © Farlex 2012
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By adding FA into WC and utilizing appropriate amount of alkaline reaction agent, the Si/Al ratio varies from 2.13 to 3.86 (Figure 4).
The many studies performed on the alkaline reaction of bentonite have been directed, obviously, to the montmorillonite alteration.
On the other hand, we have shown that the alkaline reaction of FEBEX bentonite is significantly accelerated with the increase in time and temperature (Ramirez et al., 2002).
Once the nature of the alkaline reaction of bentonite had been studied in detail, the rate of montmorillonite transformation was calculated by using the mineralogical quantification of smectite (calibrated by the decrease of the 4.45 A XRD peak area) in the 75 - 200[degrees]C tests.
The particular nature of FEBEX bentonite alkaline reaction products
The main phases identified in the alkaline reaction of FEBEX bentonite are phillipsite, Mg-clays, analcime, tobermorite and CSH-gels.
Recently, a rate-blanking method has been introduced that compensates for absorbance changes of bilirubin and hemoglobin under the strongly alkaline reaction conditions [6, 7].
The aqueous solution of sodium hydrosulfide usually has alkaline reactions. Sodium hydrosulfide is a compound that is formed by neutralizing hydrogen sulfide with sodium hydroxide.