A buffer solution is prepared by adding 12.03 g of sodium acetate (NaC 2 H 3 O 2 ) and 15.52 g of acetic acid to enough water to make 500 mL (three...

A buffer solution is prepared by adding 12.03 g of sodium acetate (NaC2H3O2) and 15.52 g of acetic acid to enough water to make 500 mL (three significant figures) of solution. Calculate the pH of this buffer.

Ka (HC2H3O2) = 1.8 × 10-5

Molar mass HC2H3O2 = 60.05 g/mol

Molar mass NaC2H3O2 = 82.03 g/mol

pH=