Calculate the pH of a NH4* buffer syster 0.010 M NH4CI.

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Chapter16: Acid-base Equilibria
Section: Chapter Questions
Problem 16.141QP: Ka for formic acid is 1.7 104 at 25C. A buffer is made by mixing 529 mL of 0.465 M formic acid,...
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Need up with #7 please. 

pkb = -10gkb
DH =14-pOH = II. 255 = |1.26
3D11,255
6. Calculate the pH of a NH4 buffer system when 20.0 mL of 0.10 M NH3 is mixed with 10.0 mL of a
0.10 M NH4CI.
7. Calculate the pH of a NH4* buffer system when 10.0 mL of 0.10M NH3 is mixed with 10.0 mL of a
0.010 M NH4CI.
BufferLab-
Transcribed Image Text:pkb = -10gkb DH =14-pOH = II. 255 = |1.26 3D11,255 6. Calculate the pH of a NH4 buffer system when 20.0 mL of 0.10 M NH3 is mixed with 10.0 mL of a 0.10 M NH4CI. 7. Calculate the pH of a NH4* buffer system when 10.0 mL of 0.10M NH3 is mixed with 10.0 mL of a 0.010 M NH4CI. BufferLab-
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