(单选题)8: 已知[Ag(CN)4]3-的积累稳定常数β2θ = 3.5×107; β3θ = 1.4×109; β4θ = 1.0×1010,试求配合物的逐级稳定常数K3θ和K4θ
A: K3θ = 49,K4θ = 7.1;
B: K3θ = 30,K4θ = 7.1;
C: K3θ = 7.1,K4θ = 2.1;
D: K3θ = 40,K4θ = 7.1
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