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Stability of Chlorite in Dilute Acid Solutions
Author(s) -
Brydon J. E.,
Ross G. J.
Publication year - 1966
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/sssaj1966.03615995003000060024x
Subject(s) - chemistry , titration , chlorite , precipitation , layered double hydroxides , inorganic chemistry , nuclear chemistry , geology , hydroxide , quartz , paleontology , physics , meteorology
Six chlorites representing 5 species were suspended in 0.01M MgCl 2 solutions with different concentrations of HCl. In 10 ‐4 N HCl solutions a final steady pH of 8 to 9 was reached quickly with the Mg‐rich chlorites and more slowly with Fe‐rich species. The evidence showed that Mg‐Al and Mg‐Fe double hydroxides controlled the pH in these suspensions. In 10 ‐2 N HCl solutions, the chlorites remained at pH values of 3 to 4 for periods up to 6 months. On the basis of direct titrations it was concluded that precipitation of Fe‐ and Al‐hydroxides buffered the pH at 3 to 5 and that the precipitate impeded H uptake and Mg release.