Essay on Plan of a Titration to Work Out the Acidity of Acid Rain.

819 Words Nov 7th, 2008 4 Pages
An Experiment to find the Concentration of a Sample of Acid Rain
When a metal is extracted from its ore often sulphur dioxide is produced. When sulphur dioxide is dissolved in water it forms a strong acid called sulphuric acid. Sulphuric acid is often sold as a useful by-product, but also gets into the water cycle and forms acid rain. In this experiment, I have been given a sample acid rain of concentration between 0.05 mol dm-3 and 0.15 mol dm-3 and my aim is to find out exactly what its concentration is.
To do this I have been given solid anhydrous sodium carbonate and a range of pH indicators. With this solid anhydrous sodium carbonate I can make a solution of known concentration by mixing it with distilled water to make
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This means for every mole of sulphuric acid there is, 1 mole of sodium carbonate is needed to neutralise it. As the concentration of the sulphuric acid is around 0.1 mol dm-3 (between 0.05 mol dm-3 and 0.15 mol dm-3), the concentration of sodium carbonate should be 0.1 mol dm-3 so the volumes of both solutions will be around the same.
A solution of 0.1 mol dm-3 will have 0.1 moles in for

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