What is the molarity of an aqueous phosphoric acid solution if 12.55 mL is completely neutralized by 25.62 mL of 0.1232 M NaOH?
What is the equation balanced?
My answer was 0.1676
- Roger the MoleLv 74 weeks ago
H3PO4 + 3 NaOH → 3 H2O + Na3PO4
(25.62 mL) x (0.1232 M NaOH) x (1 mol H3PO4 / 3 mol NaOH) / (12.55 mL H3PO4) =
0.08383 M H3PO4
[If you don't have the balanced equation you can't answer the question. Don't waste your time trying.]