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Question

What is the definition of Ka? Is it constant or changing (before, at or after the equivalent point)? If so, why does it has a certain number?


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  • Or why does my lab book says: " an acid's pKa value is equal to the pH at the midpoint (1/2 equivalence point) of the titration"? why does the 1/2 equivalence point is significant? Yanrong commented about 2 years ago