硫代锑酸盐水溶液的电导及扩散系数的研究
来源期刊:中南大学学报(自然科学版)1981年第1期
论文作者:赵瑞荣
文章页码:1 - 9
关键词:硫代锑酸盐; 扩散系数; 不同温度; 电导测量; 稀水溶液; 当量电导; 稀溶液; 导电性; 碱溶液; 相互作用
摘 要:本文在25°至60℃温度范围内,测量了Na3SbS3·9H2O、Na2SbS4·9H2O水溶液的电导,指出这两种盐的水溶液均是强导电性的。由Nernst—Einstein方程D°=(RT/nF2)λ0计算了在不同温度下,在稀水溶液中两种盐的扩散系数,并求出了扩散系数随温度变化的经验方程。最后讨论了在硫化碱溶液中Na3SbS3·9H2O与NaOH的相互作用,指出Na3SbS3·9H2O与NaOH按下述方程发生反应。Na3SbS3+4NaOH=NaSbO2+3Na2S+2H2O
Abstract:
The conductivity and diffusivity of sulphoantimonatic aqueous solution are studied in the range of temperature 25°—60℃.It indicated that the equivalent conductivity of Na3SbS3·9H2O and Na3SbS4·9H2O are 122Ω-1·cm2 and 123Ω-1·cm2 respectively at 25℃.According to the equation of Nernst--Einstein D°=(RT/(nF2))λ0 the diffusivity of sulphoantimonate in dilute solution at different temperatures is calculated.The diffusivities of SbS33- and SbS43- ions in infi-nite dilute solution are obtained at 25℃.They areD0SbS33-=0.64×10-5cm2·sec-1and D0SbS43=0.65×10-5cm2·sec-1 The relationship between the conductivity of Na3SbS3·9H2O in sodium sulphide and that of sodium hydroxide solution is also studied.It is indicated that the reaction of Na3SbS3 with NaOH results in NaSbO2 on the basis ofthe following equation:Na3SbS3+4NaOH=NaSbO2+3Na2S+2H2O