摘要
确定了Zn(Leu)SO4 ·0 5H2 O在水 -丙酮中结晶生长的最佳体积比为 1∶5,用微量热法测定了该结晶生长过程在 2 98 15K时的放热量及产热速率,计算了动力学常数,认为结晶过程符合Burton Cabrera Grank位错理论.同时测定了Zn(Leu)SO4 ·0 5H2 O 2 98 15K时在纯水中的溶解焓为(3 17± 0 0 9)kJ·mol-1,计算了Zn(Leu)2 +(aq)的标准生成焓为( - 10 88 2 6± 4 2 8)kJ·mol-1.
The optimum volume ratio for Zn(Leu)SO_4·0 5H_2O crystallizing from mixed solvent of water and acetone has been determined to be 1∶5 of water∶acetone. The crystal growth process of the compound at 298 15 K was investigated by microcalorimetry. The experimental results show that it follows Burton-Cabrera-Grank dislocation theory. Moreover, the enthalpy of solution of Zn(Leu) SO_4·0 5H_2O in water has been measured at 298 15 K to be (3 17±0 09) kJ·mol -1. The standard enthalpy of formation of Zn(Leu) 2+(aq) has been calculated to be (-1088 26±4 28) kJ·mol -1.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2002年第12期2220-2224,共5页
Acta Chimica Sinica
基金
国家自然科学基金(Nos.2 98710 32
2 0 1710 36)资助项目
