Problem- What is the concentration of NH4+ in a 0.20 M ammonia solution? The base dissociation constant for ammonia is 1.8 x 10^-5.
a) 0.0019 M
b) 0.20 M
c) 0.040 M
d) 0.020 M
Please illustrate how you got the answer mainly the part of how you got the pH