When 12.5 mL of 0.125 M weak base B is titrated with 0.125 M monoprotic strong acid HA, is the pH at the equivalence point less than, equal to, or greater than 7?

A 25.0 mL sample of 0.080 M (CH₃)₃N (K_b = 6.4×10^–5) is titrated with 0.040 M HBr solution. What is the pH after 51.0 mL of the titrant has been added?

What is the pH at the equivalence when 0.150 M pyridine (C₅H₅N) is titrated with 0.150 M HCl solution?

What is the pH of the solution of 15.0 mL of 0.113 M aniline titrated with 5.0 mL of 0.156 M HNO₃?

Consider the titration of a 50.0 mL of 0.25 M aniline (C₆H₅NH₂) solution with 0.125 M HBr. What is the pH of the solution before adding any acid?