30.0 mL solution of 0.010 M piperidine (the active ingredient in hot pepper, the protonated form is a monoprotic weak acid with pKa= 11.123) was titrated with 0.050 M HCl.
a) Find Ve (the volume of HCl at equivalent point);
b) Calculate the pH at Va (the volume of HCl added) =0, 1⁄4 Ve, Ve, and 1.1 Ve