We’re being asked to calculate the pH of a solution that is 0.24 M NH3 and 0.16 M NH4Cl
In this case, we will be using the Henderson-Hasselbalch equation which can be used for buffer solutions
Recall the Henderson-Hasselbalch equation:
A buffer solution is prepared that is 0.24 M NH3 and 0.16 M NH4Cl. What is the pH of this buffer?
Kb for NH3 is 1.8 x 10-5