45. Which solution has the highest pH?
(A) 0.1 M KCN, K_a of HCN = 4.0 x I0^-10
(B) 0.1 M NaHS, K_b of HS^- = 1.8 x 10^-7
(C) 0.1 M NaOAc, K_a of HOAc = 1.8✖10^-5
(D) 0.1 M NaClO, Ka of HClO = 3.2 x 10^-8
(E) 0.1 M NH₄NO₃, K_b of NH₃ = 1.8 x I0^-5

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