Chemistry

Problem

Each of the following aqueous solutions is 0.10 M at 25 °C. Which solution will have the lowest pH once equilibrium is established? a) Formic acid (

pK_a = 3.75

) b) Pyridine,

\mathrm{C_5H_5N}

(

pK_b = 8.77

) c) Chloroacetic acid (

pK_a = 2.86

) d) Acetic acid (

pK_a = 4.76

)