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Equilibrium Constants between both Freshly Prepared and Aged H Montmorillonites and Chloride Salt Solutions
Author(s) -
Foscolos A. E.,
Barshad I.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300020023x
Subject(s) - adsorption , equilibrium constant , chemistry , yield (engineering) , salt (chemistry) , chloride , inorganic chemistry , materials science , organic chemistry , metallurgy
Abstract Freshly prepared and aged H montmorillonites were equilibrated with NaCl, KCl, MgCl 2 , and CaCl 2 solutions of low concentrations. With freshly prepared H montmorillonites equilibrium constants were obtained. With aged H montmorillonites equilibrium constants were not obtained because the 1 N KCl extracting technique did not yield the correct amount of adsorbed H + . To overcome this, a new method for determining adsorbed H + was used. However, the measured equilibrium constants were either smaller or contradictory to those obtained with freshly prepared H montmorillonites because it was not possible to assess the exact amount of adsorbed H + in the presence of hydroxyaluminum compounds. Thus, only equilibrium constants obtained with freshly prepared H montmorillonites were considered to be valid.