摘要
调试了美国Tronac公司生产的Model 1250滴定热量计.用环境恒温法和等温补偿法在25℃测量了盐酸与三羟甲基氨基甲烷(Tris)溶液反应及盐酸与晶体Tris反应的反应热.用环境恒温法测量和计算了盐酸与邻溴苯氨反应的反应热和化学平衡常数.还测量了水溶液中钨磷酸与二甲亚砜(DMSO)(或N,N-二甲基甲酰胺,DMF)的加合反应热,结果表明,DMSO加合物的配位键略弱于DMF加合物,这与红外光谱的结果相一致.
The American Tronac model 1250 titration calorimetry system has been tested. With isoperibol method and isothermal method, the authors have measured at 25℃ the heats of reaction of HCl solution with Tris solution and solid Tris respectively. With isoperibol method,both the equilibrium constant K and the enthalpy△H of reaction of HCl solution with o-bromoaniline solution have been measured and calculated. The heat of adduction of HPW in aqueous solution with DMSO and DMF has also been measured. The results show that the coordinate bond in DMSO adduct is slightly weaker than the one in DMF adduct. This conclusion is in accord with IR results.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
1993年第4期382-386,共5页
Journal of Fudan University：Natural Science
关键词
二甲亚砜
量热法
钨磷酸
加合反应
tungsten compounds
dimethylsulfoxide
dimethylformamide
calorimetric method
phosphotungstic acid
adduct
titration calorimetry
