Chemistry

Problem

A 10.00 mL sample of 0.500 M phosphoric acid (H₃PO₄) is diluted with water to a total volume of 100.0 mL. A 25.00 mL aliquot of the diluted acid is then titrated with 0.150 M NaOH. What volume of the NaOH solution, in milliliters, is required to reach the second equivalence point of the titration? a)

8.3\,\text{mL}

15.2\,\text{mL}

16.7\,\text{mL}

25.0\,\text{mL}

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