Thermodynamic quantities of surface formation of aqueous electrolyte solutions VII. Aqueous solution of alkali metal nitrates LiNO3, NaNO3, and KNO3.
To compare the effect of nitrate anions on the surface tension increments of aqueous solutions with that of halide anions, the surface tension of aqueous solutions of lithium nitrate, sodium nitrate, and potassium nitrate was measured as a function of temperature and concentration. It is shown that the surface tension of aqueous alkali metal nitrate solutions is determined primarily by the kinds of anions, since the surface tension increments of these nitrates were of the same magnitude. The importance of the electrical double layer at the surface is discussed in relation to these surface tension increments.
Matubayasi
Norihiro
N
Faculty of Fisheries, Nagasaki University, 1-14 Bunkyou-machi, Nagasaki 852-8521, Japan. norihiro@nagasaki-u.ac.jp
Yoshikawa
Ryuji
R
D004563:Electrochemistry; D004573:Electrolytes; D018020:Lithium Compounds / Q000737:chemistry; D009566:Nitrates / Q000737:chemistry*; D017680:Potassium Compounds / Q000737:chemistry; D012996:Solutions; D013499:Surface Properties; D013500:Surface Tension; D013816:Thermodynamics; D014867:Water
D004573:Electrolytes; D018020:Lithium Compounds; D009566:Nitrates; D017680:Potassium Compounds; D012996:Solutions; D014867:Water; C031618:sodium nitrate; C023844:potassium nitrate