Exam 3

2.  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 0.270 M hydroboric acid (HBr, strong acid) at 25oC. What is the pH of the solution at the equivalence point of the titration? Sodium formate is a basic salt, with the formula HCOONa, and the acid-ionization constant of its conjugate, formic acid (HCOOH), is 1.7 x10–4 at 25oC. (15 pt)