The effect of gas discharge of atmospheric pressure in dielectric tubes filled by electrolyte solution at pH and elecrtoconductivity of sulfuric acid, sodium hydroxide and sodium sulfate of various concentrations was under study. Dynamic current-voltage characteristics of volume discharge were obtained for wide concentration range of electrolytes. Solution pH was shown to be increased under discharge action at the decrease of electroconductivities. The process under study was found out to be periodic, electrophysical parameters being dependent not only from solution electrocondutivity, but also from its chemical composition.