The pH is equal to the pKa of the acid at half equivalence point:
Based on the table and pKa values, the acid is:
This is the pH curve for titration of a diprotic acid with NaOH.
What is the most likely identity of the acid? Refer to the table of pKavalues of diprotic acids, provided here.
a) cacodylic acid
b) maleic acid
c) 5-aminolevulinic acid
d) methylsuccinic acid
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