Chemistry pH question

Question

What is the pH of a 0.100 M NH3 solution that has Kb = 1.8 × 10-5 ? The equation for the dissociation of NH3 is

NH3 H2O --> NH4 OH-

a. 2.87 b. 11.13 c. 12.13 d. 1.87

Answer 1

you should do your own homework!

Answer 2

u should do your own work

Answer 3

answer is 11.13