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This article in SSSAJ

  1. Vol. 35 No. 6, p. 881-883
     
    Received: Mar 9, 1971


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doi:10.2136/sssaj1971.03615995003500060013x

Calcium Complexing and the Enhanced Solubility of Gypsum in Concentrated Sodium-Salt Solutions1

  1. F. S. Nakayama2

Abstract

Abstract

Solubility of Gypsum in NaClO4, NaCl, NaNO3, and NaOAc solutions and their mixtures was determined experimentally and theoretically. The dissociation constants of CaCl+, CaNO3+, CaOAc+, NaOAc0, and NaNO30 were computed from the solubility behavior of the solid. The predicted solubility values corresponded closely to the measured values in mixed Na-salt solutions when allowances were made for Ca-complexing.

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