87.5 Theories for strong electrolyte 3. Debye-Huckel-Onsage theory In 1926, Onsager pointed out that as the ion distorted atmospheres moves across the solution its ionic atmosphere is repeatedly being destroyed and formed again The time for formation of a new ionic atmosphere (relaxation time)is ca. 10-s in an 0.01 mol kg" solution Under normal conditions the velocity of an ion is sufficiently slow so that the electrostatic force exerted by the atmosphere on the ion tends to retard its motion and hence to decrease the conductance 1)Relaxation effect 2)Electrophoretic effect L Onsager, Zur Theorie der Electrolyte I', in Physikali Zeitschrift, 27(1926), 388-392, and".II,, ibid., 28(1 277-2983. Debye-Hückel-Onsage theory 1) Relaxation effect 2) Electrophoretic effect In 1926, Onsager pointed out that as the ion moves across the solution, its ionic atmosphere is repeatedly being destroyed and formed again. The time for formation of a new ionic atmosphere (relaxation time) is ca. 10-7 s in an 0.01 mol·kg-1 solution. Under normal conditions, the velocity of an ion is sufficiently slow so that the electrostatic force exerted by the atmosphere on the ion tends to retard its motion and hence to decrease the conductance. + − + − − − − − + + + + + − − − + + − − §7.5 Theories for strong electrolyte distorted atmospheres L. Onsager, “Zur Theorie der Electrolyte I”, in Physikalische Zeitschrift, 27 (1926), 388–392, and “…II”, ibid., 28 (1927), 277–298