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首页> 外文期刊>Journal of Solution Chemistry >Thermodynamics of Electrolytes. 13. Ionic Strength Dependence of Higher-Order Terms; Equations for CaCl_2 and MgCl_2
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Thermodynamics of Electrolytes. 13. Ionic Strength Dependence of Higher-Order Terms; Equations for CaCl_2 and MgCl_2

机译:电解质的热力学。 13.高阶项的离子强度依赖性; CaCl_2和MgCl_2的方程式

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摘要

While the original ion-interaction (Pitzer) equations of 1973 were adequate for many electrolytes to the limit of solubility, additional terms are needed for some systems of large solubility. A simple pattern of ionic-strength dependence is proposed for third, fourth, and higher virial coefficients. It is found to be very effective in representing the complex behavior of CaCl_2(aq) as well as that of MgCl_2(aq) at 25 deg C. Equations without ion association are presented for each system that are valid for the full range to 11.0 and 5.9 mol-kg~(-1), respectively, as well as simpler equations for limited molality ranges.
机译:尽管1973年的原始离子相互作用(Pitzer)方程对于许多电解质都已达到溶解度的极限,但对于某些大溶解度的系统则需要附加的术语。对于第三,第四和更高的病毒系数,提出了一种简单的离子强度依赖性模式。发现它在表示CaCl_2(aq)和MgCl_2(aq)在25℃时的复杂行为方面非常有效。针对每个系统,提供了没有离子缔合的方程,这些方程对11.0和1.02的整个范围均有效。分别为5.9 mol-kg〜(-1)以及有限摩尔浓度范围的简单方程。

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