A chemist titrates 240.0 mL of a 0.3902 M lidocaine (C14H₂, NONH) solution with 0.7622 M HBr solution at 25 °C. Calculate the pH at equivalence. The pK of lidocaine is 7.94. Round your answer to 2 decimal places. Note for advanced students: you may assume the total volume of the solution equals the initial volume plus the volume of HBr solution added. pH = 0 X

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