17-7 pH of various salts

What is the pH of 0.05M of NH₄Cl? Ka=5.6x10^-10

What is the pH of 0.05M of NaClO? Kb=3.3x10^-7

What is the pH of 0.05M of NaHCO₃? Kb=2.3x10^-8

What is the pH of 0.05M of KF? Kb=1.5x10^-11

How many grams of NaHCO₃ will be used to make a 1.0L solution that has a pH = 9.0?