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.

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Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.