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A 100.0 −mL buffer solution is 0.110 M in NH3 and 0.125 M in NH4Br. A. If...

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Chemistry

A 100.0 −mL buffer solution is 0.110 M in NH3 and 0.125 M inNH4Br.

A. If the same volume of thebuffer were 0.260 M in NH3 and 0.395 M in NH4Br, what mass of HClcould be handled before the pH fell below 9.00?

B. What mass of HCl could this buffer neutralize before thepH fell below 9.00?

Answer & Explanation Solved by verified expert
3.7 Ratings (284 Votes)
A pOH pKb log NH4NH3 NH4Br supliments NH4 pKb for NH3 474 pOH 474 log 03950260 492 pH14pOH 14492 908 for the case when pH fell below 9 poH 149 5 hence 5 474 log NH4NH3 NH4NH3    See Answer
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