formic acid (HCOOH) and sodium formate (NaCOOH). The Ka for formic acid is 1.8 x 10-4. The simultaneous equilibrium reaction is as shown below. Calculate the pH and the buffer capacity of the solution.  HCOOH (aq) + H2O (l) ⇋ H3O+ (aq) + HCOO- (aq)

Chemistry & Chemical Reactivity
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Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases
Section: Chapter Questions
Problem 116IL: Amino acids are an important group of compounds. At low pH, both the carboxylic acid group (CO2H)...
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A formic acid/sodium formate buffer solution can be prepared with 0.012 M each of
formic acid (HCOOH) and sodium formate (NaCOOH). The Ka for formic acid is
1.8 x 10-4. The simultaneous equilibrium reaction is as shown below. Calculate the pH and
the buffer capacity of the solution. 
HCOOH (aq) + H2O (l) ⇋ H3O+ (aq) + HCOO- (aq)

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Suppose you wanted to increase the buffer capacity of the formic acid/sodium formate
buffer solution above. What would you do? Explain your answer. 

 

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