The change of pH during an acid-base titration

There is little to see in this experiment, so I have just presented the results. The links below show computer generated graphs for the four different experiments. Each experiment starts with 25 cm³ of 1.0 M acid in a beaker. 35 cm³ of 1.0 M alkali is then added. The pH is measured and plotted against the volume of alkali added. The strong acid used was hydrochloric acid, the strong alkali was sodium hydroxide solution, the weak acid was ethanoic acid and the weak alkali was ammonia solution.

This experiment is an important one in order to understand titration theory. Look at the four graphs presented below. The theory link gives details of the application of this experiment to titration work.

Strong acid-strong alkali	Weak acid-strong alkali
Strong acid-weak alkali	Weak acid-weak alkali

Application of these results to titration work