Question

Calculate the molarity of H3Po4 if 358ml of H3PO4 solution is completely titrated by 876ml of 0.0102M Ba(OH)2 solution? 2H3PO4+3Ba(OH)2= Ba3(PO4)2 +6H2O?

Answer 1

See this old answer, here.

Explanation:

Titration would not be complete.

`H_3PO_4(aq) + Ba(OH)_2(aq) rarr BaHPO_4(aq) + 2H_2O(l)`

Is the correct equation, i.e. there is 1:1 molar equivalence between `Ba(OH)_2` and `H_3PO_4(aq)` in water.