Poissons Equation for a Spherically Symmetrical Charge Distribution

APPENDIX 3.1. POISSON S EQUATION FOR A SPHERICALLY SYMMETRICAL CHARGE DISTRIBUTION 

Suppose that on dissolution 1 mole of salt gives rise to moles of positive ions and v moles of negative ions. Then, instead of Eqs. (3.65) and (3.66), one has 

Upon adding the two expressions (A3.3.1 ) and (A3.3.2) and dividing by v = to get the average contribution to the free-energy change of the system per mole of both positive and negative ions, the result is 

APPENDIX 3.4. TO SHOW THAT THE MINIMUM IN THE VERSUS r CURVE OCCURS AT r= A/2 

APPENDIX 3.6. RELATION BETWEEN CALCULATED AND OBSERVED ACTIVITY COEFFICIENTS 

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