Will NH3 and NH4I form a buffer if combined in equal concentrations and volumes? Select the single best answer.

Answer 1

Yes, NH3 (ammonia) and NH4I (ammonium iodide) will form a buffer if combined in equal concentrations and volumes.

In a buffer solution, one component is a weak base (NH3) and the other is its conjugate acid (NH4^+, which comes from NH4I). Because they can react with added acids or bases, this combination is able to resist changes in pH, characteristic of a buffer solution.