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报据熔体解离为其罗輯产物的观点,探討了熔融冰晶石的组成。报据实测密度进行的計算炭明,结果与解离为NaF及NaAlF_4的数据完全符合,在1000°对,K=0.09。得出Na_3AlF_6与NaAlF_4的密度分别为2.210与1.873克/毫升,Na~+,F~-,AlF_4~-与AlF_6~(3-)的克离子体积相应为5.7,15.8,61.6与77.9。1000°时熔融冰晶石具有如下組成(以克分子分数表示):Na_8AlF_60.384;NaF0.411;NaAlF_40.205。冰晶石的解离热⊿H=22千卡/克分子。
According to the report melt dissociation for its Luo product point of view, the composition of the molten cryolite. Calculated according to the actual measured density, the results are completely consistent with the dissociation data for NaF and NaAlF_4, at 1000 °, K = 0.09. The results show that the densities of Na_3AlF_6 and NaAlF_4 are 2.210 and 1.873g / ml respectively, and the corresponding ion volumes of Na ~ +, F ~ -, AlF_4 ~ - and AlF_6 ~ (3-) are 5.7, 15.8, 61.6 and 77.9.1000 °, respectively When the molten cryolite has the following composition (in mole fraction): Na_8AlF_60.384; NaF0.411; NaAlF_40.205. Cryolite dissociation heat ⊿ H = 22 kcal / mole.