Add 006g of naoh mw40gmol to 1 l of acid solution to 001 m

Question

a) Add 0.06g of NaOH (MW=40g/mol) to 1 L of acid solution to 0.01 M of carboxylic acid at pH3. What is final pH (no volume change)?

b) Calculate pH of 0.2 M acetic acid and 0.05M sodium acetate (mixture of equal volumes)

c) Calculate pH of 0.35 M glycine and 0.55 M HCL (mixture of equal volumes)