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Effect of Concentration on the Free and Titratable Acids of Hydrogen Bentonites Sols

Nature volume 155, pages 329–330 (1945)Cite this article

Abstract

HYDROSOLS of hydrogen clays and hydrogen bentonites show a marked acid character and give potentiometric and conductometric titration curves with bases having definite inflexion points and breaks1,2,3. A linear relation between the H+-ion concentration CH+, and the concentration of the colloid, C, was observed by Wiegner and Pallmann4 in the case of dilute sols having concentrations up to about 0·3 per cent. At higher concentrations the slope, dCH+/dC, progressively decreased. Some interesting effects of the concentration of the colloid on the H+-ion concentration of the sol as well as the amount of the acid calculated at the inflexion point of the potentiometric titration curve with sodium hydroxide have been observed in the case of a hydrogen bentonite, Kashmir-B, isolated from a deposit of bentonite in Kashmir. X-ray analysis showed that Kashmir-B did not probably contain any mineral other than montmorillonite5.

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Authors and Affiliations

  1. Physical Chemistry Laboratory, University College of Science, 92 Upper Circular Road, Calcutta

    J. N. MUKHERJEE, R. P. MITRA & S. S. MANDAL

Authors
  1. J. N. MUKHERJEE
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  2. R. P. MITRA
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  3. S. S. MANDAL
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MUKHERJEE, J., MITRA, R. & MANDAL, S. Effect of Concentration on the Free and Titratable Acids of Hydrogen Bentonites Sols. Nature 155, 329–330 (1945). https://doi.org/10.1038/155329a0

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