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Calculate the pH of a solution formed by mixing 100.0 mL of 0.20 M HClO with 200.0 mL of 0.30 M KClO. The Ka for HClO is 2.9 × 10^-8. A) 7.54 B) 8.01 C) 6.46 D) 5.99 E) 7.71