Explain the first equivalence point was observed at ph

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Reference no: EM13688587

Problem- In conducting a titration of 75.00mL of a certain triprotic acid with 0.0800 M NaOH the following information was recorded.

1) The first equivalence point was observed at pH 3.96 after the addition of 12.4 mL of NaOH

2) The Second equivalence point was observed after the addiditon of 25.00 mL of NaOH; the pH was measured to be 4.98

Determine the apparent concentration of the triprotic acid and the dissociation constant for the first two dissociation steps given that pKa3= 5.19

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Reference no: EM13688587

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