Compute the ph after 0019 mole of hcl is added to 100 l of

Question

Compute the pH after 0.019 mole of HCl is added to 1.00 L of each of the four solutions. Presume that all solutions are at 25°C.

(a) 0.149 M acetic acid (HC2H3O2, Ka = 1.8???10?5)

(b) 0.149 M sodium acetate (NaC2H3O2)

(c) pure H2O

(d) 0.149 M HC2H3O2 and 0.149 M NaC2H3O2