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水合正高碘酸镍盐溶解反应的热力学性质
Thermodynamic properties for the dissolution of nickelorthoperiodate(Ⅶ) hydrate
【摘要】 用具有恒温环境的反应热量计测定了Ni2HIO6·3H2O在3mol·dm-3HNO3水溶液中的标准摩尔溶解焓变,计算出了相应的标准摩尔自由能变与标准摩尔熵变,用线性回归法分析并修正了用分光光度法在298.5~328K范围内测定与计算的文献值.
【Abstract】 Using an isoperibol calorimeter,this paper measured the standard molar dissolution enthalpy of nickel orthoperiodate(Ⅶ) hydrate in aqueous 3 mol·dm-3 HNO3 at 298.2 K. From the result and other auxiliary quantities,this paper computed the standard molar Gibbs free energy change and entropy change of the compound.Furthermore,through a linear regression analysis,it corrected the literature values obtained from the solubility determination using a spectrophotometer over the temperature range 298.5328 K.
【关键词】 热力学性质;
水合高碘酸镍盐;
溶解量热法;
回归分析;
【Key words】 thermodynamic property; nickel orthoperiodate(Ⅶ) hydrate; solution-reaction calorimetry; regression analysis;
【Key words】 thermodynamic property; nickel orthoperiodate(Ⅶ) hydrate; solution-reaction calorimetry; regression analysis;
【基金】 湖北省科委"九五"攻关项目(630-230896);湖北省教育厅重点资助项目(2003A004).
- 【文献出处】 华中师范大学学报(自然科学版) ,Journal of Central China Normal University(Natural Sciences) , 编辑部邮箱 ,2004年01期
- 【分类号】O645
- 【下载频次】63