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Which of the following acids has the strongest conjugate base? A. HBr , Ka>>1 B. HFv,...

Which of the following acids has the strongest conjugate base?
A. HBr , Ka>>1
B. HFv, Ka=6.8*10^-4
C. HOCl, Ka= 3.0*10^-8
D. HCN, Ka= 4.8*10^-10
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