Determine the ph of the original solution of phenol

Question

A phenol, C₆H₅OH, which is having the 0.515 g dissolved in exactly the 125 mL of water. The resulting solution is titrated with 0.123 M NaOH.

C₆H₅OH (aq) + OH^- (aq)-> C₆H₅O^- (aq) +H₂O (l)

1. Determine the pH of the original solution of phenol?

2. Determine the concentrations of all of the following ions at the equivalence point: Na⁺ , H₃O⁺,OH^-. And C₆H₅O^-?

3. Determine the pH of the solution at the equivalence point?