Homework Statement
For the titration of 50 mL of 0.150 M ethylamine (C2H5NH2), with 0.100 M HCl, find the pH :
a) when 10 mL more of HCl has been added than is required
b) when 75% of the required acid has been added Homework Equations
Maybe Henderson Hasselbalch?: pH = pKa + log (base/acid)...