Given 001 M Solutions of Each of the Following Acids, Which

Multiple Choice

Given 0.01 M solutions of each of the following acids, which solution would have the lowest pH?

A) Nitrous acid (HNO₂) , pK_a = 3.34
B) Phenol (HC₆H₅O) , pK_a = 9.89
C) Acetic acid (HC₂H₃O₂) , pK_a = 4.74
D) Hydrofluoric acid (HF) , pK_a = 3.46
E) Formic acid (HCHO₂) , pK_a = 3.74