Debye Huckel equation strong electrolytes

This chapter traces the history of activity coefficient models for aqueous solutions of single strong electrolytes. Of great importance is the Debye-Huckel equation, which has been the cornerstone of more recent models. In addition to Debye-Huckel, the following, more recent methods are outlined ... 

Debye-Huckel approximation — In calculating the potential distribution around a charge in a solution of a strong -> electrolyte, - Debye and -> Hiickel made the assumption that the electrical energy is small compared to the thermal energy ( zjei (kT), and they solved the -> Poisson-Boltzmann equation V2f = - jT- gc° eexp( y) by expanding the exponential... 

Debye-Huckel-Onsager theory — (- Onsager equation) Plotting the equivalent conductivity Aeq of solutions of strong electrolytes as a function of the square root of concentration (c1/2) gives straight lines according to the - Kohlrausch law... 

Heat Capacities and the Debye-Hfickel Theory.—By combining the general equation (44.46) with the expression for L2 [equation (44.39)3 derived from the Debye-Huckel theory, it is found that for a solution containing a single strong electrolyte,... 

Use of the Debye-Huckel-Onsager equation for symmetrical strong electrolytes which are fully dissociated... 

Lewis and Randall (Ref. [99]) introduced the term ionic strength, defined by this equation, two years before the Debye-HUckel theory was published. They found empirically that in dilute solutions, the mean ionic activity coefficient of a given strong electrolyte is the same in all solutions having the same ionic strength. 

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