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A buffer solution contains 0.38 mol of hypobromous acid (HBrO) and 0.86 mol of sodium hypobromite (NaOBr) in 1.90 L. The Ka of hypobromous acid (HBrO) is Ka = 2.5e-09. (a) What is the pH of this buffer? pH = (b) What is the pH of the buffer after the addition of 0.04 mol of NaOH? (assume no volume change) pH = (c) What is the pH of the original buffer after the addition of 0.21 mol of HI? (assume no volume change) pH =

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