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Ka for hypochlorous acid, HClO, is 3.0*10^(-8). Calculate the pH after 10.0, 20.0, 30.0, and 40.0 mL of 0.100M NaOH have been added to 40.00mL of 0.100M HClO.
First I would determine mL for the equivalence point.
Use the Henderson-Hasselbalch equation for all point up to the equivalence point. Use the hydrolysis of (Kb) NaClO for the equivalence point. Use the excess NaOH for anything past the equivalence point; however, I don't think you have anything past the E.P.