Exam 3

1.   A 0.270 M solution of sodium formate, used in several fabric dyeing and printing processes, is prepared by dissolving it in water. A 75.0-mL sample of this sodium solution is titrated with a 10 mL of 0.270 M hydroboric acid (HBr, strong acid) at 25oC. What is the pH of the solution after adding the 10 mL of HBr?  Sodium formate is a basic salt, with the formula NaCOOH.  (Note…sodium formate’s conjugate is HCOOH, with a Ka of 1.7 x10–4 at 25oC). (14 pt)