The three-component system sodium bromide-hydrogen bromide-water. An experiment in elementary physical chemistry

O'Brien, S. James; Kenny, Christopher L.; Fuxa, Raymond J.

doi:10.1021/ed017p576

Cited by 2 publications

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“…Comparison of the model and measured solubilities of halite in (H + Na + Cl){aq}; +, ×, Δ, ○, □ (A) and NaBr·2H 2 O in (H + Na + Br){aq}; +,◊, ○, □ (B). Our calculated halite solubility and that from Harvie et al (HMW) are indistinguishable.…”

Section: Discussionmentioning

confidence: 99%

Thermodynamic Models for the (HClO₄ + NaClO₄){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Oakes,

Ward,

Chugunov

2023

J. Chem. Eng. Data

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Current Pitzer activity coefficient models for the (H + Na + ClO 4 ){aq} and (H + Na + Br){aq} systems are limited to ionic strengths <7 mol• kg −1 . To accurately describe activity coefficients and solid solubilities in these systems, new Pitzer model parameters β Na,a (0) , β Na,a (1) , C Na,a ϕ , θ H,Na s , and ψ H,Na,ClOd 4 (a = ClO 4 − , Br − ) and standard state chemical potentials (μ i °/RT) were fit to the 298 K isopiestic and solid solubility data. The resulting NaClO 4 {aq} model reproduces the data, within their accuracy, to ionic strengths of approximately 18 mol•kg −1 . No activity coefficient model parameters were necessary for the neutral species. Our dissociation constant of 130.36 for NaClO 4 •H 2 O is significantly different from the frequently cited value of 151.71. The θ H,Na s derived from the (H + Na + ClO 4 ){aq} system was tested for consistency against other acid systems containing soluble sodium salts, i.e., the (H + Na + Cl){aq}, (H + Na + Br){aq}, and (H + Na + NO 3 ){aq} systems. A new Pitzer model for the NaBr{aq} system, which reproduces the data within their accuracy to solid saturation at 9.179 mol•kg −1 , was produced for this test. The fitted θ H,Na s parameter eliminated the need for the ψ H,Na,a parameter (a = Cl − or Br − ).

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Section: Discussionmentioning

confidence: 99%

Thermodynamic Models for the (HClO₄ + NaClO₄){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Oakes,

Ward,

Chugunov

2023

J. Chem. Eng. Data

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Nichtwäßrige Natriumhalogenid-Systeme

Roth¹

1972

Natrium

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The three-component system sodium bromide-hydrogen bromide-water. An experiment in elementary physical chemistry

Cited by 2 publications

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Thermodynamic Models for the (HClO₄ + NaClO₄){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Thermodynamic Models for the (HClO₄ + NaClO₄){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Nichtwäßrige Natriumhalogenid-Systeme

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The three-component system sodium bromide-hydrogen bromide-water. An experiment in elementary physical chemistry

Cited by 2 publications

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Thermodynamic Models for the (HClO4 + NaClO4){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Thermodynamic Models for the (HClO4 + NaClO4){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Nichtwäßrige Natriumhalogenid-Systeme

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Thermodynamic Models for the (HClO₄ + NaClO₄){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa

Thermodynamic Models for the (HClO₄ + NaClO₄){aq} and (HBr + NaBr){aq} Systems at 298.15 K and 0.1 MPa