post lab 5.pdf - Brianna Cozino Chemistry 106 Section 5 Post Lab Le Chatelier’s Principle Objective In this experiment our goal was to apply different

post lab 5.pdf - Brianna Cozino Chemistry 106 Section 5...

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Brianna Cozino Chemistry 106 Section 5 2/27/19 Post Lab Le Chatelier’s Principle Objective: In this experiment, our goal was to apply different treatments to the cobalt solution to observe the equilibrium shift of the reaction. We observed this by testing 6 different reactions in different tubes. Procedure: We began by preparing two water baths, one with ice and one using the hot plate to increase its temperature. We rinsed each test tube with ethanol to remove any extra water. We then placed around 7.5-8 mL of CoCl4 into each tube. Each tube was given a different treatment. Tube one was given a small amount of water. Tube two was given 5 drops of HCl. Tube three was given 5 drops of AgNO3. Tube four was given 2 scoops of Ca(NO2)2. Tube 5 was given 2 scoops of CaCl2. Lastly, tube 6 was heated for 2 minutes then put in an ice bath for two minutes. Results: Tube 1: this tube began as a light purple color, when we added the water it tuned into a very pale pink.
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  • Fall '12
  • E.Lopez

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