Exhibit 15-4
The following question(s) pertain to a solution prepared by combining 1.0 mole of ammonia and 50.0 grams of ammonium nitrate in enough water to give a final volume of 2.00 liters.
Refer to Exhibit 15-4. What is pH of this solution?

Question

Quizplus · Accepted Answer

The solution is a buffer composed of ammonia (NH3) and ammonium nitrate (NH4NO3). The pH can be calculated using the Henderson-Hasselbalch equation. The pKa of NH4+ is about 9.25, and the ratio of base (NH3) to acid (NH4+) is approximately 1:1, leading to a pH slightly above the pKa, around 9.46.

Exhibit 15-4 The Following Question(s) Pertain to a Solution Prepared by Combining