MgB_4O_7－MgSO_4－MgCl_2－H_2O及次级体系298．15K时稀释热、热容和表观摩尔焓的研究  

HEATS OF DILATION, HEAT CAPACITIES AND APPARENT MOLAL ENTHALPIES OF MgB_4O_7-MgSO_4MgCl_2-H_2O SYSTEMS AT 298.15K

作　　者：李积才[1] 王鲁英[1] 曾忠民[1] 翟宗玺[1] 

机构地区：[1]中国科学院青海盐湖研究所

出　　处：《无机化学学报》1995年第4期409-414,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金

摘　　要：本文研究了含硼四元水盐体系ＭｇＢ４Ｏ７－ＭｇＯ４－ＭｇＣｌ２－Ｈ２Ｏ及次级体系ＭｇＢ４Ｏ７－ＭｇＳＯ４－Ｈ２Ｏ和ＭｇＢ４Ｏ７－ＭｇＣｌ２－Ｈ２Ｏ在２９８．１５Ｋ时不同离子强度下的稀释热和热容，并将Ｄｅｂｙｅ－Ｈｕｃｋｅｌ极限公式应用到多元电解质稀溶液中，获得从高离子强度到低离子强度Ｉ为１９－０．０００１范围内的相对表观摩尔焓．he heats of dilution and heat capacitics of MgB4O7-MgSO4-MgCl2-H2O quaternary system and MgB4O7-MgSO4-H2O and MgB4O7-MgCl2-H2O subsystems were measured in the tonic strength range from 19 to 0. 1 at 298. 15K. The data of the heat of dilution were extrapolated to infinite dilution by use of the Dcbye-Huckcl limiting law to obtain relative apparent molal enthalpies over the ionic strength I range from 19 to 0.0001.

关 键 词：稀释热 热容 表观摩尔焓 四硼酸镁 

分 类 号：O642.54[理学—物理化学]