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# Explain Debey Huckel Onsager's law of the strong electrolyte.

Last updated date: 20th Jul 2024
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Hint: Before answering this question, we should what is Debey Huckel Onsager’s law. The relationship between molar conductivity ${{\lambda }_{m}}$at a particular concentration and molar conductivity $\lambda _{m}^{\circ }$at infinite concentration is Debey Huckel Onsager's law of the strong electrolytes. Debey huckel limiting law tells the behavior of strong electrolytes.

In the year 1926, Debye and Huckel modified the theory and Onsager modified it further but all the postulates and original theory were retained. It was assumed that the electric field causes the distortion of the charge cloud from the spherical symmetry. After taking this into account, together with some specific requirements of moving ions like viscosity and electrophoretic effects. Onsager helped to derive a theoretical expression to give an empirical relation that is called kohlraush’s law for the molar conductivity ${{\lambda }_{m}}$.
${{\lambda }_{m}}=\lambda _{m}^{\circ }-K\sqrt{c}$
$\lambda _{m}^{\circ }$ is the limiting molar conductivity, K is an empirical constant and c is the electrolyte concentration. The limit of the infinite dilution means limiting. Onsager express it through-
${{\lambda }_{m}}=\lambda _{m}^{\circ }-(A+B\lambda _{m}^{\circ })\sqrt{c}$