Which of the Following Solutions Contains the Strongest Acid?
A)5 $\times$

Multiple Choice

Which of the following solutions contains the strongest acid?

A) 5.00 M HCN (K_a = 6.2 $\times$ 10^-10)
B) 3.50 M H₂C₆H₆O₆ (K_a1 = 7.9 $\times$ 10^-5,K_a2 = 1.6 $\times$ 10^-12) .
C) 2.50 M HC₂H₃O₂ (K_a = 1.8 $\times$ 10^-5)
D) 4.00 M HOCl (K_a = 3.5 $\times$ 10^-8)
E) 1.00 M HF (K_a = 7.2 $\times$ 10^-4)