Explain Phosphoric Acid Is a Triprotic Acid Question # 00767058 Posted By: MARCIA Updated on: 06/24/2020 12:25 PM Due on: 07/17/2020 Subject Chemistry Topic General Chemistry Tutorials: 0 Question Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.500 M phosphoric acid solution. pka1=2.16 pka2=7.21 pka3=12.32 Rating: 4.9/5