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Which of the following acids (listed with pKa values) and their conjugate base would be best to form a buffer with a pH of 8.10? A) HCN, pKa = 9.31 B) HF, pKa = 3.46 C) HC7H5O2, pKa = 4.19 D) HClO, pKa = 7.54 E) HClO2, pKa = 1.96