HC9H7O4(aq) + H2O(l) ⇄ H3O+(aq) + C9H7O4-(aq) The molecular formula of acetylsalicylic acid, also kn — Acids and Bases Chemistry Question

HC₉H₇O₄(aq) + H₂O(l) ⇄ H₃O⁺(aq) + C₉H₇O^4-(aq)

The molecular formula of acetylsalicylic acid, also known as aspirin, is HC₉H₇O₄. The dissociation of HC₉H₇O₄(aq) is represented by the equation above. The pH of 0.0100 M HC₉H₇O₄(aq) is measured to be 2.78.