Question: A 25.00-mL sample of an unknown H3PO4 solution is titrated with a 0.100 M NaOH solution. The equivalence point is reached when 52.58 mL of NaOH solution is added. What is the concentration of the unknown H3PO4 solution? The neutralization reaction is:
H3PO4(aq) + 3 NaOH(aq) 3 H2O(l) + Na3PO4(aq).