Find the pH of the solution obtained when 2.6 × 10⁻² L of 6.5 × 10⁻² M benzylamine, C₇H₇NH₂, is titrated to the equivalence point with 5.4 × 10⁻² M hydrochloric acid. Kb for benzylamine is 2.1 × 10⁻⁵.