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Systematic pH calculation package for Python

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In the [carbonic acid example](https://github.com/rnelsonchem/pHcalc#ph-of-001-m-h2co3) of the README, the pKa values of H2CO3 are given as [3.6, 10.32] and the pH of 0.01 M is computed to be 2.834. According...

The software keeps bringing up errors for numpy and i would assume the other import functions. Since it seems like the tinspire cx 2 cas is unable to use the...

Hi, I would like to use your “pH Calc” algorithm in my Reactive-Transport-Toolbox. This reaction toolbox solves advection-diffusion-reaction PDE for saturated (at the moment) and not saturated (will be added...

Correction of a small typo in module description

Should it be `caoh2 = Acid(pKa=(14-pkb[Ca(OH)2]), charge=+2, conc=0.01)` ?

Since pKa will vary with both the concentration of a species, as well as the temperature of the solution, I think it will be worthwhile to introduce a method to...

Looking for feedback on new object class names. Here's the proposed nomenclature: * AcidAq -- Used to define aqueous species that have known Ka/pKa values * IonAq -- Used to...

enhancement

This PR adds the following features: - conc_solve method takes a target pH value, and will search for concentrations of constituent species in a system which will attain the desired...

This can be used for gasses that participate in acid/base equilibria Can be used for atmospheric CO2, for example. In the _diff_pos_neg method of the System class, the alpha value...

This is a PR for some new functionality for printing `System` object instances. This will give different information if the `System` is printed before or after calculating the pH (i.e....