IB Chemistry - Acids and Bases

IB Chemistry home > Syllabus 2016 > Acids and Bases > Titration curves

Syllabus ref: 18.3

The shape of the 'pH against volume added' graph differs depending on the type of acid and base.

Strong acid - strong base titrations

Titration curves are the graphs obtained by plotting the pH of the reaction mixture against the volume of base (or acid) added during the titration of either an acid by a base or vice versa.

A typical strong acid - strong base titration curve looks like as follows:


Weak acid - strong base titration


Weak base strong acid titration


Weak acid with a weak base

This mixture cannot be titrated as the change in pH near the equivalence point is too small to allow reliable results.