H3PO4 + 3NaOH --> Na3PO4 + 3H2O
How much 0.20 M H3PO4 is needed to react with 100cm3 of 0.10 M
3KOH(aq) + H3PO4(aq) --> K3PO4(aq) + 3H2O(l)
25.00 mL of 1.50 M phosphoric acid solution is titrated with 0.455 M potassium hydroxide
solution. What volume of base solution is needed for complete neutralization?