The ionic product of water, pK(w) = -log[H+][OH-] has been determined in aqueous solutions of tetramethylammonium chloride over the concentration range of 0.1-5.5 M at 25°C using high-precision glass electrode potentiomettic titrations, pK(w) data relating to aqueous potassium and sodium chlorides at ionic strengths up to 5 M are markedly lower than the tetramethylammonium chloride results. These differences are almost certainly due to weak associations between potassium and (especially) sodium and hydroxide ions.
- Ionic product
- Tetramethylammonium chloride solutions
ASJC Scopus subject areas
- Analytical Chemistry