Calculate the pH at each stage in the titration in which 0.116 m HCl(aq) is added to 25.0 mL of 0.215 m KOH(aq): 

(a) Initially;

(b) After the addition of 5.0 mL of acid;

(c) After the addition of a further 5.0 mL;

(d) At the stoichiometric point; 

(e) After the addition of 5.0 mL of acid beyond the stoichiometric point;

(f) After the addition of 10.0 mL of acid beyond the stoichiometric point.