answer this asap im sl confused

4) Consider making a 500.mL buffer of pH=5.00 using 1.00M solutions of both acetic acid (CH3CO2H) and the sodium salt of its conjugate base. a) What volumes of acetic acid solution and the conjugate base solution are required? b) What the pH of the buffer solution after adding 5.0mL of 0.10MBa(OH)2 ? c) What is the pH after adding the same amount of base as (b) in distilled water