Publication | Closed Access
Application of Pitzer's equations to dissociation constants of ammonium ion in lithium chloride–sodium chloride mixtures
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1989
Year
Chemical EngineeringChemical ThermodynamicsNh+4 IonsEngineeringPhysicsPitzer EquationsNatural SciencesIon ExchangeAmmonium IonAtomic PhysicsSolution (Chemistry)Physical ChemistryChemistryDissociation ConstantsChemical KineticsElectrochemistryIon StructureIon Process
The Pitzer equations have been used to calculate the dissociation constants of NH+4 ions in concentrated LiCl–NaCl solutions at 25 °C. The calculated values agreed with the observed values within experimental uncertainties provided all the higher-order interaction terms (θS and ψS) concerned were introduced. The θ(NH4Na) and ψ(NH4NaCl) values, which are not available in the literature, were determined from isopiestic measurements of NH4Cl–NaCl solutions.