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CHEM 1&2 Lab Manual & worksheets pg 65

CHEM 1&2 Lab Manual & worksheets pg 65 -...

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Experiment 3: Chemical Reactions General Chemistry I and II Lab Manual Dakota State University Page 65 of 232 3. Sodium Bicarbonate (baking soda) Take a small amount of sodium bicarbonate and put it into two test tubes distributed approximately equally. Vigorously heat one of the two test tubes for several minutes and note any observations. During the heating, test for gases released using the glowing splint test. Allow the test tube to cool. When the heated test tube is cool, add about half a milliliter of water to both the heated and the unheated test tubes. Test the pH of both test tubes using pHydrion paper. There were two gases released in this reaction; what do you think they were? Balance the equation. 4. Potassium Perchlorate In a test tube, place about one scoopula full of potassium perchlorate (KClO 3 ) and a little bit (about a pea size) of manganese dioxide (a catalyst). Shake the test tube to mix the contents.
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