H3PO4 + 3 NaOH --> Na3PO4 + 3H2O
If 36.0cm3 of H3PO4 react exactly with 80.0cm3 of 0.500 M NaOH, what is the concentration of the phosphoric acid?
BaCl2(aq) + 2AgNO3(aq) --> 2AgCl(s) + Ba(NO3)2(aq)
25.00 mL of a barium chloride solution is titrated with 0.150 M silver nitrate solution. 18.55 mL of the silver nitrate solution is required to completely precipitate the chloride ion as silver chloride. What is the molarity of the barium chloride solution?