A 30.00-ml sample of 0.125 M HCOOH is being titrated with 0.175 M NaOH. What is the pH after 5.00 mL of Naol has been added?
K of HCOOH =1,8 x10⁻⁴
О 9.74
О 4.26
О 10.78
О 3.22
О I DON'T KNOW YET