Report your answers with the proper number of significant numbers. Hydroazoic acid >
Acid= HN3
Salt= NaN3
(Ka = 1.9 x 10^-5)
Hypochlorous acid >
Acid= HClO
Salt = NaClO
(Ka= 3.0 x 10^-8)
Hypobromous acid > Acid=HBrO
Salt =NaBrO
(Ka= 2.5 x 10^-9)

1. How many milligrams of hypochlorous acid ( HClO ; Ka = 3.0 x 10-8) must be in a 3.0-L solution that has a pH of 6.52?

2. A buffer solution of pH 7.6 is to be prepared using HClO and NaClO, If the concentration of the acid is to be 0.50 M, what should be the concentration of its conjugate base?

3. A buffer solution with pH 8.5 is to be prepared from among the three Acid-Sodium salt pairs above..

a. Which among the given acids and their sodium salts shall yield the best buffer solution?

b. What will be the ratio between the concentration of the acid and the concentration of its
conjugate base?