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建立了强电解质水溶液KBr-H2O、NH4Br-H2O和ZnBr2-H2O作用浓度的计算模型,计算了上述三个溴化物二元水溶液体系在温度为298.15K、质量摩尔浓度达到饱和前的作用浓度.热力学模型计算的组元作用浓度以纯物质为标准态和摩尔分数为浓度单位,与文献报道的组元活度以无限稀为标准态和质量摩尔浓度为浓度单位经过活度的标准态转换后可良好地吻合,且转换系数在计算的浓度范围内基本守恒.以上热力学模型计算的组元作用浓度能反映出强电解质水溶液的结构本质;在本模型的假设下电解质水溶液呈现理想溶液特征,组元的作用浓度在计算的浓度范围内严格遵守质量作用定律.
The calculation models for the concentration of KBr-H2O, NH4Br-H2O and ZnBr2-H2O in aqueous electrolytes were established, and the concentrations of the above two bromine binary systems were calculated at 298.15K before the mass concentration reached saturation. The concentrations of the components calculated by the model are pure substance as the standard state and the mole fraction is the concentration unit, and the activity of the component reported in the literature is infinite after dilution as the standard state and the mass molar concentration as the concentration unit after the activity standard state conversion can be good And the conversion coefficients are basically conserved within the calculated concentration range.The concentration of the component calculated by the above thermodynamic model can reflect the structural essence of the strong electrolyte aqueous solution; under the assumption of this model, the electrolyte aqueous solution exhibits the ideal solution characteristics, Concentration of action in the calculation of the concentration range strictly follow the law of mass action.