물-알코올 混合溶媒中에서 몇가지 이온들의 溶媒化

다국어 초록 (Multilingual Abstract)

Conductivities of some electrolytes (KC1, LiC10₄) were measured in the various weight percent concentration of several water-alcohol mixtures (EtOH-H₂O, MeOH-H₂C ). By using Walden's rule, the extent of solvation for the electrolytes was estimated from the data.
The values of r-function ◁수식삽입▷(원문을 참조하세요) versus solvent composition were plotted for conductance data on potassium Chloride and lithium perchlorate in water-methanol and water-ethanol solvents.
The curves are striking in several respects. In the first place, they are similar for both solvent systems. In the second place, there are minimum values of the r-function at about 15 weight % ethanol in the water-ethanol solvent and at about 20 weight % methanol in the water-methanol solvent. This phenomena were deduced that the solvated water is replaced by organic solvent.
The increased electrostatic force due to increasing amounts of the lower dielectric organic component of the solvent pulled the solvent layers in closer to the ions and caused a decrease in the r-function in spite of the fact that the larger organic solvent molecules were replacing the smaller water molecules in the outer solvation layer of the ions.
Beyond the minimum values of the r-function, the replacement effect predominate over the increased electrostatic effect and the r-functions increase in an accelerated manner; these increases become precipitous at around 80 weight % organic component of the solvent.

목차 (Table of Contents)

• 목차 = 1
• I. 서론 = 3
• II. 실험 = 6
• III. 결과 및 고찰 = 8
• IV. 결론 = 15
• 참고문헌 = 17
• 영문초록 = 21