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Volumes and Heat Capacities of Cobalt(II), Nickel(II), and Copper(II) Sulfates in Aqueous Solution
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-08-10 , DOI: 10.1021/acs.jced.0c00407 Chandrika Akilan 1 , Ting Chen 1 , Tuomas Vielma 2 , Peter M. May 1 , Gamini Senanayake 1 , Glenn Hefter 1
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-08-10 , DOI: 10.1021/acs.jced.0c00407 Chandrika Akilan 1 , Ting Chen 1 , Tuomas Vielma 2 , Peter M. May 1 , Gamini Senanayake 1 , Glenn Hefter 1
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The densities and isobaric volumetric heat capacities of aqueous solutions of the sulfate salts of cobalt(II), nickel(II), and copper(II) have been measured at 298.15 K and 0.1 MPa using vibrating-tube densimetry and Picker flow calorimetry, respectively, at concentrations in the range 0.01 ≲ m/mol·kg–1 ≲ 1.5. These data were used to derive the corresponding apparent molar volumes, Vϕ, and apparent molar isobaric heat capacities, Cpϕ. Where comparisons were possible, the present Vϕ results were in good agreement with literature data. No Cpϕ data appear to have been reported previously for any of these salts. The variations of Vϕ and Cpϕ with concentration were well correlated using the Pitzer formalism combined with the values of V° and Cp° estimated from literature data. Both Vϕ and Cpϕ for all three salts show remarkable similarities and can be shown to lie on a common line by applying fixed addends over almost the whole concentration range studied.
中文翻译：
水溶液中硫酸钴（II），镍（II）和铜（II）的体积和热容量
分别使用振动管密度法和Picker量热法在298.15 K和0.1 MPa下测量了钴（II），镍（II）和铜（II）的硫酸盐水溶液的密度和等压体积热容。 ，在该范围内的浓度0.01≲米/摩尔公斤· -1 ≲1.5。这些数据被用来导出相应的表观摩尔体积，V φ，和表观摩尔等压热容，Ç p φ。其中比较有可能，本V φ结果与文献数据一致。无C p ϕ以前似乎已经报告了这些盐的数据。的变化V φ和Ç p φ与浓度使用皮特泽形式主义用的值结合比较准确V °和Ç p °从文献数据估算。两个V φ和Ç p φ为所有三种盐显示显着的相似性，并且可以通过施加固定的加数在几乎整个浓度范围内研究了被示为位于共同的线。
更新日期：2020-09-10
中文翻译：
水溶液中硫酸钴（II），镍（II）和铜（II）的体积和热容量
分别使用振动管密度法和Picker量热法在298.15 K和0.1 MPa下测量了钴（II），镍（II）和铜（II）的硫酸盐水溶液的密度和等压体积热容。 ，在该范围内的浓度0.01≲米/摩尔公斤· -1 ≲1.5。这些数据被用来导出相应的表观摩尔体积，V φ，和表观摩尔等压热容，Ç p φ。其中比较有可能，本V φ结果与文献数据一致。无C p ϕ以前似乎已经报告了这些盐的数据。的变化V φ和Ç p φ与浓度使用皮特泽形式主义用的值结合比较准确V °和Ç p °从文献数据估算。两个V φ和Ç p φ为所有三种盐显示显着的相似性，并且可以通过施加固定的加数在几乎整个浓度范围内研究了被示为位于共同的线。
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