抄録
pH of sea water, brine and bittern decrease with increasing their concentration. From unusual low pH of the concentrated MgCl2 solution, relations between pH and MgCl2 concentration of sea water, brine and bittern were studied. Neutralization curves of MgCl2 and MgSO4 solution were obtained, and pH of the solutions of those salts were determined at various concentration. Effects of Mg(OH)2, HCl and NaHCO3 on pH the MgCl2 soluion were also estimated. Factors on which pH of sea water, brine and bittern depend were partly discussed.
