The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted. If 0.560 moles of a monoprotic weak acid (k_a = 8.6 x 10⁻⁵) is titrated with NaOH, What is the pH of the solution at the half equivalence point?
