Write an equation that describes the equilibrium that exists when the weak acid benzoic acid (C₆H₅CO₂H) dissolves in water. Identify each of the four species in solution as either Brønsted acids or Brønsted bases. Does the equilibrium favor the products or the reactants? (In acting as an acid, the OCO₂H group supplies H⁺ to form H₃O⁺.)