Titration of Weak Monoprotic Acids

It is interesting to compare the case of a strong acid titrated with a strong base (in the last section) with the titration of a weak acid, such as acetic acid, with a strong base, such as NaOH. The difference between the weak acid-strong base case and the strong acid-strong base case just discussed is that for the same 

FIGURE 5.2 A family of acid-base titration curves for a 0.10 M strong acid (HC1) and three weak acids, as indicated (0.10 M each), titrated with 0.10 M NaOH (strong base). HAc is a representation of acetic acid. 

The weak acid curves can also be calculated. This involves the use of the equilibrium constant expression for a weak monoprotic acid ionization  

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