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2.7 perform a first-hand investigation to demonstrate the effect of dissolved carbon dioxide on the pH of water

perform a first-hand investigation to demonstrate the effect of dissolved carbon dioxide on the pH of water

Basic procedure

Using a data logger with a pH probe, take readings of the change in pH of 100 mL of distilled water as exhaled air is bubbled through it over a two-minute period.

This experiment can also be performed using universal indicator paper and an indicator colour chart to estimate the pH at various stages of the experiment.