posted by Kelly .
A solution of .12 mol/L of phosphoric acid completely neutralizes .20L of a solution of sodium hydroxide with.a concentration of .15mol/L What is the neutralizing volume of the phosphoric acid?
H3PO4 + 3NaOH ==> 3H2O + Na3PO4
mols NaOH = M x L = ?
Convert mols NaOH to mols H3PO4.
M H3PO4 = mols/L. You have M and mols, solve for L.