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Methods 1. Add 20 mL of distilled water and 2.5 mL of 0.1 M silver nitrate to a 600-mL beaker. Place the beaker on a magnetic stirrer at a medium setting, add a stir bar, and start stirring. 2. Add 1 mL of 0.1 M sodium carbonate and observe the off-white precipitate. 3. Add 2.5 mL of 0.1 M sodium hydroxide to form a light brown, caf-au-lait precipitate. 4. Add 3.75 mL of 0.1 M sodium chloride to make a curdy-white solid. 5. Add 7.5 mL of 5.0 M ammonium hydroxide to dissolve the solid. 6. Add 1.25 mL of 0.1 M sodium bromide to precipitate an off-white solid. 7. Add 12.5 mL of 0.1 M sodium thiosulfate to dissolve the precipitate. 8. Add 2.5 mL of 0.1 M sodium iodide and observe the pale yellow precipitate. 9. Add 2.5 mL of 0.1 M sodium sulfide to precipitate a black solid.

Questions

1. For each experiment write out the balance chemical equations for each reaction with states. 2. Within each balanced chemical equation explain what is happening and which direction the experiment is going, as well why are precipitates forming? 3. Were there any reactions that did not follow LeChteliers Principle? If so why do you think they did not follow the rule?