Thermodynamics Of Extremely Diluted Solutions

摘要

An extensive thermodynamic study has been carried out on aqueous solutions, obtained through the iteration of this basic step: a dilution 1:100 in mass and a succussion. This step is iterated until extreme dilutions are reached, less than 1.10 -5 mol kg -1 , "extremely diluted solutions",(EDS). We measured the heats of mixing of basic solutions with the "EDS” their electrical conductivity and pH. All these parameters are higher than compared with solvent. We take into account effect of chemical impurities, deriving from the glass containers. We also measured the e.m.f. of suitable galvanic cells, at increasing concentrations of added electrolytes that is always higher in the "EDS” than in pure water. Here we thus show that successive dilutions and succussions can permanently alter the physico-chemical properties of the solvent water. The nature of the phenomena here described still remains unexplained, nevertheless some significant experimental results were obtained.