12. 如果 pH = -log[H+ ] 且 pKa = -logKa,有一濃度為 1M 的某單質子酸的水溶液, 其中[H+ ] = 4.24 x 10-3 M,則此溶液的pH值及此酸的pKa分別約為下列何者?
(A) pH = 2.37,pKa = 3.37
(B) pH = 3.37,pKa = 4.74
(C) pH = 2.37,pKa = 4.74
(D) pH = 11.63,pKa = 3.37
(E) pH = 11.63,pKa = 5.37

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統計: A(0), B(0), C(5), D(0), E(0) #2154192