Neutralising an acidic solution

A plastic carton of universal indicator strips with a colour comparison chart

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Use this simple practical to illustrate the pH and temperature changes as an acidic solution is neutralised. Includes kit list and safety instructions.

In this experiment, students gradually neutralise an acidic solution (vinegar) by the addition of slaked lime (calcium hydroxide) and limestone (calcium carbonate), observing any accompanying changes in pH and temperature.

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