Daftar Isi: On Variation of Equivalent Conductance of Strong 1

Daftar Isi:

Department of Chemistry, University College of Science and Technology, Calcutta-700 009 Manuscript received 14 September 1981, revised 23 February 1982, accepted 28 September 1982 In previous publications the expression for \(k\) (Kappa) of the Debye.Hückel theory of strong electrolytes has been modified. In this paper using this modified \(k\) (Kappa) equations have been deduced for λ, the equivalent conductance of solutions of strong electrolytes. These equations cover a wide range of concentration from 0.00002 N to 0.1 N of solutions of 1 : 1 strong electrolytes and according to them λ varies as (C)1/2,C representing concentration in moles per liter. The equations have been subjected to test using the data available in the literature on HCI, KCI, NaCI, KNO3 and AgNO3 and have been found satisfactory. It has been found that A, the "effective diameter", of the ions occurring in the equations, has different values in the different zones of concentration of the electrolytes used. The value of A of each of the chlorides above 0 001 N is much smaller than that below it. In the case of each of the nitrates, A has the highest value below 0 0008 N and the lowest value above 0.005 N. Within the range 0.005 N to 0.0008 N, it has an intermediate value. Since the change in A indicates change in hydration of the ions, the effect of its change on the size and mobility of the ions has been considered.