溶解量热法测三氧化钼标准生成焓

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

用溶解量热法,以KIO_4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MoO_3的标准生成焓,并推荐其值为ΔH_(t(moO_3))~0(298.15K)=-765.0±6.8kJ·mol^(-1)。

The standard enthalpy of formation of MoO3 was determined by solution calorimetry in an automatic RD-1 model heat-conducting calorimeter. The calorimetric solvent is a alkalescent solution consisting of KIO4 and KOH. For the solution three different thermochemical cycles were designed to determine the enthalpy. According to the results obtained, the valuewas recommended.