An ammonia/ammonium buffer solution contains 0.31 M NH3 and 0.74 M NH4+. The Kp value of ammonia is 1.8 × 10-5. Calculate the pH of this buffer. Express the pH numerically.

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Chapter1: Chemical Foundations
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I Review | Constants | Periodic Table
A buffer consists of a weak acid or base, and the
conjugate of that acid or base.
Consider a buffer made by combining the weak
base B with its conjugate acid, BH+:
Part A
B(aq) + H2O(1)
ВH (аq) + ОН (аq)
[BH+][OH
[B]
An ammonia/ammonium buffer solution contains 0.31 M NH3 and 0.74 M NH4+. The Kp value of ammonia is 1.8 x 10-5.
Calculate the pH of this buffer.
Къ
Express the pH numerically.
The OH- concentration of this buffer can be
calculated using the Kp expression:
» View Available Hint(s)
K B]
=[-HO]
BH+]
?
pH =
Submit
Transcribed Image Text:I Review | Constants | Periodic Table A buffer consists of a weak acid or base, and the conjugate of that acid or base. Consider a buffer made by combining the weak base B with its conjugate acid, BH+: Part A B(aq) + H2O(1) ВH (аq) + ОН (аq) [BH+][OH [B] An ammonia/ammonium buffer solution contains 0.31 M NH3 and 0.74 M NH4+. The Kp value of ammonia is 1.8 x 10-5. Calculate the pH of this buffer. Къ Express the pH numerically. The OH- concentration of this buffer can be calculated using the Kp expression: » View Available Hint(s) K B] =[-HO] BH+] ? pH = Submit
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