[ms5152]

Need a simple calculation to add Sulfuric acid and Phosphoric acid to maintain 5% in 7 gallon water by Titration.
We are doing titration with 1N sodium Hydroxide. Titration with 1ml diluted acid.

[Hunter2]

The question is in what ratio are your acids. The titration will detect only acidity. So far if you use Phenolphthaleine as indicator, both acids will be detected at same time. 1 ml 1 n NaOH is equal to 49 mg H₂SO₄ or H₃PO₄ (First titration point).