水合高碘酸镉盐溶解反应的热力学性质

Thermodynamic properties of cadmium heraoxoiodate (Ⅶ) hydrate for the dissolution

用恒温热量计测定了 Cd2 HIO6 · 1 .2 5 H2 O在 3 mol· 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计在 2 98.5～ 3 2

Using an isoperibol calorimeter, we measured the standard molar dissolution enthalpy of cadmium hexaoxoiodate(Ⅶ) hydrate in aqueous 3 mol·dm -3 HNO 3 at 298.2 K and computed the thermodynamic parameters of the salt,e.g., Δ diss G  m and Δ diss S  m. Furthermore,we corrected the literature values obtained from the salt dissolution between 298.5~328 K through a linear regression analysis.