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A 100.0 mL sample of 0.18 M HClO4 is titrated with 0.27 M LiOH. Determine the pH of the solution after the addition of after the addition of 30.0 mL of LiOH. A) 2.86 B) 1.21 C) 2.00 D) 1.12 E) 0.86