Calculate the pH of the solution that results from each of the following mixtures. The ionization constants required in this exercise are found in Appendix II, page A-12, of your textbook:

The acidity constant Ka of HF is 3.5×10−4.

The basicity constant Kb of C2H5NH2 is 5.6×10−4.

Caculate pH
180.0 mL of 0.12 M C2H5NH2 with 285.0 mL of 0.22 M C2H5NH3Cl