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A 360.0 −mL buffer solution is 0.170 M in HF and 0.170 M in NaF. A) What...

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Chemistry

A 360.0 −mL buffer solution is 0.170 M in HF and 0.170 M inNaF.

A) What mass of NaOH could this buffer neutralize before the pHrises above 4.00?

B) If the same volume of the buffer was 0.360 M in HF and 0.360M in NaF, what mass of NaOH could be handled before the pH risesabove 4.00? I keep getting 1.8 g and 3.5 g, which is wrong.

Answer & Explanation Solved by verified expert
4.3 Ratings (866 Votes)
The dissociation constant Ka of HF 72 x 104 Therefore pKa log Ka 314 Now using Henersen Hassalbalch equation for buffers pH pKa log salt acid pH pKa log F HF 314 log 01700170 314 this is the initial pH of the given buffer Now we need the    See Answer
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