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无水钾镁矾类复盐K_2Mn_2(SO_4)_3的热化学研究

Thermochemical studies on the langbeinite-type double sulfate salt,K_2Mn_2(SO_4)_3
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摘要 用具有恒定温度环境的新型的反应量热计 ,以 3mol·dm- 3 H2 SO4溶液作为量热溶剂 ,在2 98.2 K温度下 ,测定了具有无水钾镁矾结构的硫酸复盐 K2 Mn2 ( SO4) 3 的标准摩尔生成焓 ,其值为 -35 34 .6 3± 0 .1 1 k J· mol- 1 . The standard molar formation enthalpies of langbeinite type double sulfate salt K 2Mn 2(SO 4) 3 is determined by solution calorimetry in an isoperibel reaction colorimeter as -3 534.63±0.11 kJ·mol -1 .The calorimetric solvent is an acid solution consisting of 3 mol·dm -3 H 2SO 4 and the experimental temperature is 298.2 K.
出处 《黄冈师范学院学报》 2001年第5期60-62,共3页 Journal of Huanggang Normal University
基金 湖北省科委九五攻关项目 ( N o.6 30 -2 30 896 ) .
关键词 硫酸复盐 溶解量热法 标准摩尔生成焓 无水钾镁钒结构 热化学 K2Mn2(SO4)3 double sulfate salt solution reaction colorimetry standard molar formation enthalpy
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