Transport and structural properties of alkali-metal bromides in 2-methoxyethanol solutions

Limiting molar conductivity data for alkali-metal bromides MBr (M=Li, Na, K, Rb, Cs) in 2-methoxyethanol solutions at 19 different temperatures in the -10 less-than-or-equal-to t/degrees-C less-than-or-equal-to 80 range have been used to test some correlation functions. The LAMBDA0 values have been apportioned into individual ionic contributions (lambda0,i) using the tetraphenylphosphonium tetraphenylborate reference electrolyte method, and the temperature dependence of these quantities follows the equation of Speedy and Angell, lambda0,i = A0(T/T(S) - 1)gamma. The activation energies for ionic mobilities have been evaluated from the Arrhenius equation, providing evidence that in these solutions the ionic migration at 25-degrees-C of cations and anions follows the sequences Na+ < PPh4+ < Li+ congruent-to K+ < Rb+ < Cs+ and BPh4- < Br- respectively. Other quantities such as ionic radii in solution and solvation numbers have been derived by applying literature approaches.