Calculate the pH of a solution that is 0.186M in sodium benzoate and 0.100M in benzoic acid. The Ka of benzoic acid is 6.31105 4.4694.2003.9309.38212.811 QUESTION 12 A 1.0 L buffer solution is 0.150MHC2H3O2 and 0.250MNaC2H3O2. Which of the following actions will destroy the buffer? adding 0.250 moles of NaOH adding 0.150 moles of HCl adding 0.050 moles of HC2H3O2 adding 0.250 moles of HCl All of the above will destroy the butfer