What is the pH of a solution that results from mixing together equal volumes of

Question

What is the pH of a solution that results from mixing together equal volumes of a 0.0400 M solution of ammonia and a 0.0200 M solution of hydrochloric acid? (pKa of NH_4^+ = 9.25) Adding a strong acid (HCI) to a weak base (NH_3) results in the neutralization of the weak base (and the acid). When you neutralize a weak base, you create its conjugate acid. Once you have a weak base and its conjugate acid, you have a buffer - the domain of Henderson-Hasselbach. An ICE chart might help you keep track of how much NH_3 and NH_4+ you have.

Explanation / Answer

Answer:

pOH = pKa + log 0.0400/ 0.0200 = 9.55
pH = 4.4

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.