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I am fully aware that the pKa is the pH at half the equivalence point, but are there some programs or methods I could use to accurately estimate the pKa without manually drawing lines on the graph?

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  • $\begingroup$ Have you tried any curve fitting solution (Excel, Igor, Origin..)? $\endgroup$ – Greg Jul 16 '15 at 4:27
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If you are titrating by hand, I'm afraid that there is no way out. You'll have to draw a graph.

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