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A 110.0 mL buffer solution is 0.110 molL−1 in NH3 and 0.125 molL−1 in NH4Br. Part A...

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Chemistry

A 110.0 mL buffer solution is 0.110 molL−1 in NH3 and 0.125molL−1 in NH4Br.

Part A (PLEASE ANSWER EVERY PART CORRECTLY :))

What mass of HCl will this buffer neutralize before the pH fallsbelow 9.00? (Kb(NH3)=1.76×10−5

Express your answer using two significant figures.

mm =g

Part B

If the same volume of the buffer were 0.265 molL−1 in NH3 and0.390 molL−1 in NH4Br, what mass of HCl could be handled before thepH fell below 9.00?

Express your answer using two significant figures.

mm =g

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