【摘要】 采用具有恒温环境的反应热量计 ,以 2 mol· L- 1 HCl作为量热溶剂 ,分别测定了 Nd Cl3· 6 H2 O(s) +3Gly(s) (Gly代表甘氨酸 )和配合物 Nd(Gly) 3Cl3· 3H2 O(s)在 2 m ol· L- 1 HCl溶液中的溶解焓变。根据盖斯定律设计了一个热化学循环 ,由此可计算得到六水氯化钕与甘氨酸配位反应的反应焓△ r Hθm(2 98.2 K) =- 13.6 32 k J·mol- 1 ;并估算出配合物 Nd(Gly) 3Cl3· 3H2 O的标准生成焓△ f Hθm(2 98.2 K) =- 36 42 .2 3k J· mol更多还原

【Abstract】 The reaction enthalpy of coordination reaction of neodymium chloride with glycine is determined by solution calorimetry in an isoperibel reaction calorimeter.The calormetric solvent is the solution of hydrochloric acid (2 mol·L -1 ),a new thermochemical cycle is designed.According to the results,the following data △ rH θ m(298 2K)=-13 632kJ·mol -1 ,△ fH θ m[Nd(Gly) 3Cl 3·3H 2O,s,298 2K]=-3642 23kJ·mol -1 were obtained.更多还原