Question 1
Calculate the percent ionization of nitrous acid in an aqueous solution that is 0.249 mol L
-1 in nitrous acid. The acid dissociation constant of nitrous acid is

◦ 1.12 × 10
-4◦ 0.0450
◦ 4.25
◦ 0.342
◦ 5.53
Question 2
Calculate the pH of a 1.00 L solution of 0.100 M NH
3(aq) after the addition of 0.010 mol HCl(g). For NH
3, p
Kb = 4.74.
◦ 10.21
◦ 9.26
◦ 8.31
◦ 11.46
◦ 7.00