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Unformatted text preview: 2. Make the indicator solution by mixing 4 grams of Eriochrome Black T into 20 mL of distilled water. 3. Fill buret with EDTA solution 4. Place 20 mL of water sample in beaker. 5. Begin titration and record. 6. Repeat tirations three times, however, if the titration volumes are between 10 and 40 mL, consider changing the sample volume or making new EDTA solution 7. Endpoint will be indicated by a blue color in sample Data Tables Mass of EDTA (g) Volume of Water Sample (mL) Mass of Erio T (g) Volume of EDTA used to Titrate sample (mL) Trial 1 Trial 2 Trial 3...
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- Spring '07