P区元素氢化物水溶液酸性强度变化规律的解释  

Explanation for Strength Variations of Water Solution Acidity of P-block Element Hydride

作　　者：胥江河[1] 

机构地区：[1]重庆工商大学教务处,重庆400033

出　　处：《渝州大学学报（自然科学版）》2002年第2期64-68,共5页Journal of Yuzhou University(Natural Sciences Edition)

摘　　要：关于P区元素氢化物水溶液酸性强弱的变化规律有许多不同的解释 ,但这些解释都不太令人满意 ;本文打算从质子亲和能概念出发 ,设计P区元素氢化物水溶液热力学循环图 ,讨论P区元素氢化物水溶液酸碱性的变化规律 ,得出易于理解和掌握的结论 :酸根的质子亲和能愈小 ,P区元素氢化物水溶液的酸性愈强 ;质子亲和能愈大 ,P区元素氢化物水溶液的酸性愈弱。There have been some different and yet unsatisfactory explanations for the strength variations of the water solution acidities of P_block element hydrides. In this paper,based on the concept of proton affinity,the thermodynamics circulatory picture of the water solutions of P_block element hydrides has been designed. The regularity of variations of the water solution acidities of P_block element hydrides has been discussed,the results obtained,which are easy to understand and to grasp are that the smaller the proton affinity of acid radical is ,the stronger the water solution acidity of P_block element hydride becomes;the bigger the proton affinity is ,the weaker the water solution acidity of P_block element hydride becomes.

关 键 词：P区元素 氢化物 酸性 质子亲和能 

分 类 号：O611.3[理学—无机化学]