【摘要】 在１０质量％的乙醇－水混合物中，在２７８．１５～３１８．１５Ｋ温度范围内，利用电池：Ｐｔ，Ｈ２（１０１．３２５ｋＰａ）｜Ｎａ２ＣＯ３（ｍ１），ＮａＨＣＯ３（ｍ２），ＮａＣｌ（ｍ３），１０质量％乙醇－水｜ＡｇＣｌ－Ａｇ的准确电动势数据，确定了在１０％的乙醇－水混合物中碳酸二级解离常数Ｋ２．得到了Ｋ２和温度关系的经验方程ｐＫ２＝２３．３８－１４５４．８／Ｔ－０．０２６４３Ｔ．用热力学关系推导出在１０质量％的乙醇－水混合物中碳酸二级解离过程的各个热力学量，并用溶质－溶剂相互作用的观点讨论了这些结果．更多还原

【Abstract】 The molecular structure of metal complex H 6edta V Ⅲ(edta)(H 2O) 2·4H 2O (edta 4 =ethylenediamine N,N,N,N tetraacetate) has been determined by a single crystal X ray structure analysis. The crystal data are as follows; triclinic, P 1—,a=7.724(5),b=12.092(4),c=12.622(4),α=72.79(3)°,β=81.79(4)°,γ=73.80(4)°,V=1079.1(8) 3,Z=1, and R=0.048 for observed 2238 unique reflections. The complex anion V Ⅲ(edta)(H 2O) has a seven coordinate structure close to a pseudo mono capped trigonal prism (C 2v MTP) in which the edta 4 acts as a hexadentate ligand with a water molecule capping the quadrilateral face as a seventh ligand. The counter cation H 6edta 2+ assumes a conformation similar to that adopted by the H 2edta 2 anion in its simple salts of Mg Ⅱ(H 2O) 6 · H 2edta and Rb I 2(H 2edta) ·2H 2O.更多还原