30. Which acid is the most acidic?
(A)I
(B)II
(C)III
(D)IV
(A)I
(B)II
(C)III
(D)IV
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統計: A(1), B(0), C(2), D(0), E(0) #2814020
統計: A(1), B(0), C(2), D(0), E(0) #2814020