5) You need to make 250.0 mL of a buffer with a pH of 4.10, in the chemical storage room you found some formic acid, HCHO2, pK, = 3.74 and 35.9 grams of sodium formate, NaCHO2. How many moles of formic acid should you use?

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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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5) You need to make 250.0 mL of a buffer with a pH of 4.10, in the chemical storage room you found some
formic acid, HCHO2, pK, = 3.74 and 35.9 grams of sodium formate, NACHO2. How many moles of formic
acid should you use?
Transcribed Image Text:5) You need to make 250.0 mL of a buffer with a pH of 4.10, in the chemical storage room you found some formic acid, HCHO2, pK, = 3.74 and 35.9 grams of sodium formate, NACHO2. How many moles of formic acid should you use?
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