摘要
将克拉佩龙—克劳修斯公式中的系数Ａ、Ｂ随浓度的变化规律作为判据，探讨Ｈ２ＳＯ４—Ｈ２Ｏ体系中硫酸的分子结构。指出：在水溶液中，硫酸是以Ｈ２ＳＯ４·ｎＨ２Ｏ的形式存在的，为ＳＯ３和Ｈ２Ｏ的四面缔合物，它的分子结构随溶液浓度的不同而不同；硫酸水溶液这种特有的分子结构是造成其物理和化学性质复杂多变的原因；据此，对不同的应用过程，应选择不同的硫酸浓度。
The variation of functional relation of coefficient A and B with H2SO4 concentration in Clausius -Clapeyron equation was taken as a cirterion for the molecular species of sulphuric acid in aqueous solution. The calculation showed that sulphuric acid exists in forms of H2SO4·nH2O where n varies with H2SO4 concentration and is a tetrahedroid associate. This is responsible for intricate and changeful chemical properties of H2SO4 solution. So, for a given application, H2SO4 concentration should be choiced properly.
出处
《硫酸工业》
CAS
1994年第2期42-47,共6页
Sulphuric Acid Industry
