Given a 6 M solution of NH3 (Kb = 1.78 x 10-5) and 6 M HNO3: Part A: If a buffer

Question

Given a 6 M solution of NH3 (Kb = 1.78 x 10-5) and 6 M HNO3:

Part A: If a buffer were prepared, what species would be the acid in the buffer? The conjugate base? Write out an acid dissociation reaction demonstrating this relationship.

Part B: Calculate the volume of both solutions needed to prepare 750 mL of a 0.500 M buffer with a pH of 9.00. Show ALL work.

Part C: Write out a set of stepwise instructions for preparing the above buffer, including all necessary glassware and proper quantitative technique.

Explanation / Answer

The given mixture of 6M solution of ammonia and 6M nitric acid cannot be used as buffer. A buffer solution is a solution of weak acid or a weak base and its salt. A buffer solution has the ability to resist charges in pH upon the addition of small amounts of either an acid or a base.

Part A, B and C: Buffer cannot be prepared with these two compounds.

Related Questions

Navigate

• Browse (All)
• Browse G
• Subjects

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