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本文应用钠离子玻璃电极分别和氟离子及氯离子选择性电极组成无液接界可逆电池测定电池在NaF-H_2O-1,4-(CH_2)_4O_2(二氧六圜)及NaCl-H_2O-1,4-(CH_2)_4O_2体系的标准电动势,计算NaF及NaCl由水至水-二氧六圜混合溶剂的转移Gibbs能及盐在不同组成溶液中的活度系数。并将NaCl-H_2O-1,4-(CH_2)_4O_2体系的△E_t~·的测定值与文献值进行比较,结果进一步表明应用离子选择性电极进行溶液热力学研究是可靠的,此外,将本文的结果与以前的工作比较,讨论了溶剂对△G_t°的影响。
In this paper, sodium-free glass electrode and fluoride ion and chloride ion selective electrode composed of a liquid junctionless reversible battery were measured in the battery NaF-H_2O-1,4- (CH_2) _4O_2 (dioxane) and NaCl-H_2O-1 , 4- (CH_2) _4O_2 standard electromotive force to calculate the NaF and NaCl from water to water - dioxane mixed solvent transfer Gibbs energy and salt in different composition of the activity coefficient. The results of △ E_t ~ · of NaCl-H 2 O-1,4- (CH 2) _4O_2 system were also compared with those of the literature. The results further indicate that the thermodynamic study of solution using ion-selective electrode is reliable. In addition, Results Compared with the previous work, the effect of solvent on △ G_t ° was discussed.