Suppose that 35.0 mL of 0.012 m Cu⁺(aq) is titrated with 0.010 m KBr(aq) at 25°C. A copper electrode is immersed in this solution, and its potential is measured relative to a standard hydrogen electrode. What volume of the KBr solution must be added to reach the stoichiometric point, and what will the potential be at that point? Ksp (CuBr) = 5.2 * 10^–9.