阿摩線上測驗
31. At pH 8.0, the predominant form of ethylenediaminetetraacetic acid (EDTA; H4Y: K1= 1.02 x 10-2, K2 = 2.14 x 10-3, K3 = 6.92 x 10-7, K4 = 5.50 x 10-11) is
(A) H3Y-
(B)H2Y2-
(C) HY3-
(D) Equal amounts of H2Y2- and HY3-
(E)Y4-
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統計： A(1), B(2), C(20), D(0), E(0) #3227644
統計： A(1), B(2), C(20), D(0), E(0) #3227644
