Conductivity Studies. IV. The Limiting Ionic Mobilities of Several Univalent Ions at Temperatures between 15 and 45°

Abstract

Conductance data on aqueous solutions of potassium chloride a t several temperatures are given in a paper preceding this one.' Allgood, LeRoy and Gordon2 describe the accurate determination by moving boundary method of the transference numbers of aqueous solutions of potassium chloride at 15, 25, 35 and 45'. With these data on conductances and transference numbers a t hand, we can calculate the equivalent conductances of ion constituents and the limiting ionic mobilities a t different temperatures, with an accuracy of a part in several thousand. Table I contains the assembled data on the equivalent conductances, A, of potassium chloride solutions and the corresponding transference numbers of the chloride ion, tc1, for 15, 25, 35 and 45'. The values of A are calculated from the equation in which the theoretical coefficients a and P are calculated in the same way as described by Li and Fang' and Ai is given by the equation A = Ad (1 -a@)

Surface Activity of the Triflate Ion at the Air/Water Interface and Properties of N,N,N-Trimethyl-N-Dodecylammonium Triflate Aqueous Solutions

“…The value of λ Tf at 25 °C is 44.5 S·cm 2 ·mol −1 . Because the equivalent conductivity of ions is temperature-dependent, we corrected λ Tf by increasing the value by 2% per °C, according to reported data for other ions …”