If a 30.00 ml sample of an unknown H3PO4 solution is titrated with a 0.130 M NaOH solution. Then the Equivalence point is reached when 27.32 ml of NaOH solution is added. Explain what is the concentration of the unknown H3PO4 solution? The neutralization reaction is
H3PO4 (aq) +3 NaOH (aq) => 3H2O(l)+Na3Po4(aq)