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Unformatted text preview: around 25 mL left. The remaining solution was placed in six different test tubes. The results were found by placing different chemicals in each test tube to see if a precipitate formed. We found there were no nitrate ions present in tap water because there was no precipitation reaction when iron sulfate or sulfuric acid was added. However we did find there were small amounts of calcium, magnesium, and chloride in the tap water. This can be seen by these balanced equations: Ca + CO3 > CaCO3, Mg + CO3 > MgCO3, calcium carbonate and magnesium carbonate formed when we added ammonium carbonate to the solution. Sulfate was also present in the tap water due to a precipitate forming when we added barium nitrate: Ba + SO4 > BaSO4. Lead was not present in the tap water and this was a good result, as it would not be healthy. The findings were very interesting as it is important to know what chemicals you are consuming when drinking water....
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This note was uploaded on 04/02/2008 for the course CHEM 1A taught by Professor Van koppen during the Fall '07 term at UCSB.
- Fall '07
- Van Koppen