Chemistry - How does strength of boric acid solution increase in presence of salicylic acid?
Equilibrium will be far to the right, as a stable six membered ring is formed. The proton speaks for itself.
References: Queen, A. The kinetics of the reaction of boric acid with salicylic acid. Can. J. Chem. 1977, 55 (16), 3035–3039 DOI: 10.1139/v77-421.
By googling "boric acid salicylic acid" I have found the salicylic acid acts like it was a diol toward the boric acid, but just 1:1.