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General method for calculation of hydrogen-ion concentration in multicomponent acid-base mixtures
Journal of Pharmaceutical Sciences
|August 1, 1980
Summary
A new generalized method simplifies calculating ionic equilibria and hydrogen-ion concentration for complex mixtures. This approach avoids computer analysis, offering rapid, accurate numerical solutions without approximations.
Area of Science:
- Analytical Chemistry
- Physical Chemistry
Background:
- Ionic equilibria calculations are crucial in chemistry.
- Complex mixtures often require approximations or computational methods.
Purpose of the Study:
- To develop a generalized method for rapid evaluation of ionic equilibria.
- To determine hydrogen-ion concentration in complex mixtures accurately.
Main Methods:
- Derived a single general equation for evaluating any ionic mixture.
- Developed a tableau method for numerical solutions without computer analysis or approximations.
Main Results:
- Successfully applied the method to mixtures including barbital, citric acid, and phosphates.
- Calculated hydrogen-ion concentrations showed good agreement with experimental values.
- Demonstrated simplicity and accuracy for both simple and complex solutions.
Conclusions:
- The generalized method offers a simple, rapid, and accurate approach to ionic equilibria.
- Numerical solutions are obtainable without initial approximations.
- Activity corrections were not included in this method.