高等学校化学学报

高等学校化学学报 ›› 1991, Vol. 12 ›› Issue (3): 373.

• 论文 • 上一篇    下一篇

溶解量热法测三氧化钼标准生成焓

廖力夫1, 张平民2   

  1. 1. 衡阳医学院, 421001;
    2. 中南工业大学化学系
  • 收稿日期:1989-07-29 出版日期:1991-03-24 发布日期:1991-03-24
  • 通讯作者: 廖力夫

The Standard Enthalpy of Formation of Molybdenum Trioxide Determined by Solution Calorimetry

Liao Li-fu1, Zhang Ping-min2   

  1. 1. Hengymg Medical College, Hengymg, 421001;
    2. Central South University of Technology, Changsha
  • Received:1989-07-29 Online:1991-03-24 Published:1991-03-24

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摘要： 用溶解量热法,以KIO4和KOH组成的弱碱性溶液为量热溶剂,设计3个不同的热化学循环,用RD-1型热导式自动量热计测定了MoO3的标准生成焓,并推荐其值为ΔHt(MoO3)>(298.15K)=-765.0±6.8kJ·mol-1。

关键词: 三氧化钼, 标准生成焓, 溶解量热法

Abstract: The standard enthalpy of formation of MoO3was determined by solution calorimetry in an automatic RD-1 model heat-conducting calorimeter. The calorimetric solvent is a alkalescent solution consisting of KIO4and KOH. For the solution three different thermochemical cycles were designed to determine the enthalpy. According to the results obtained, the value ΔHt(moO3)0(298.15K)=-765.0±6.8kJ·mol-1 was recommended.

Key words: Molybdenum trioxide, Standard enthalpy of formation, Solution calorimetry

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