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ECheaian Le Chatelier's Principle and Chemical Equilibrium CHE 169 g reactions in test tubes. For each reaction record your observation, and write a net ionic equation. Interpret your observations in terms of chemical equilibrium. Label a test tube#1 and add a few mL of NaOH to it. 2. Add CaCh drop wise until a noticeable precipitate ãª5.N of Ca(OH)2 is present. C owadd a few tops of the phenolphthalein indicator to the test tube #1 with the Ca(OH)2 in it. AAdd 6M HCI (NOT 12M"!) drop wise to the first test tube (#1) with the Ca(OH)2 until a change is observed. Record your results. 6. Prepare a stock solution by mixin g 2mL of 0.1M FeCly and 0. 1M KSCN in a 100 mL graduated cylind er adding H20 to bring the volume to 100 mL. Save this stock solution for the rest of the class. 8. Take 5mL of the stock solution and note the color. Add about 1mL of 0.1M FeCl solution and observe the result. Take 5mL of the stock solution and note the color. Add about 1 mL of 0.1 M KSCN solution and observe the result. 8. Take 5mL of the stock solution and note the color. Add 0.1M AgNO, solution dropwise until alpnost all the color is gone. Split the solution into two test tubes including the precipitate. Add 2mL of 0.1M KSCN dropwise to one tube and observe the result. 0. Add 2mL of 0.1M FeCla dropwise to the second tube and observe the result. 1. Add 2 drops of 6M HNOs to roughly 3mL of 0.1M K CrO, solution and observe the sult. 12. Add 10% NaOH solution dropwise to the solution from step 1 1 until the original color is restored esuA0d 2 diopM .5,to roughy nt of o iM Kcro. ãs. Add 2 drops of 6M H2SO1 to roughly 3mL of 0.1M K2CrOa solution and observe the result. y4Add 10% NaOH solution dropwise to the solution from step 13 until the original color is restored 15. Add 3 mL of conc. HCI dropwise to 2mL (no more) of 0.1M CoCh and observe the result 18 Add water dropwise to the solution from step 15 until the reverse reaction is evident. 17. Take the test tube from step 16 and place it in a water bath on a Bunsen burner and heat. 6, Label a test tube #3, and then add afew mL of the Cu.2 solution to it. (blu) °19. Add 6 M NaOH drop wise until a precipitate of Cu(OH)2 is observed. 20. Add 6M NH3 drop wise (Use Caution!! Are those goggles still on!) until a change is observed. You will probably need to stir or shake your test tube. Record your observations 21. Add 6M HCI dropwise until a change is observed. Stir or shake as you add the HCI. Record all observations. Revision 1.00 · 17 Jan 2012
Just need to make sure my answers are correct.
ECheaian Le Chatelier's Principle and Chemical Equilibrium CHE 169 g reactions in test tubes. For each reaction record your observation, and write a net ionic equation. Interpret your observations in terms of chemical equilibrium. Label a test tube#1 and add a few mL of NaOH to it. 2. Add CaCh drop wise until a noticeable precipitate ãª5.N of Ca(OH)2 is present. C owadd a few tops of the phenolphthalein indicator to the test tube #1 with the Ca(OH)2 in it. AAdd 6M HCI (NOT 12M"!) drop wise to the first test tube (#1) with the Ca(OH)2 until a change is observed. Record your results. 6. Prepare a stock solution by mixin g 2mL of 0.1M FeCly and 0. 1M KSCN in a 100 mL graduated cylind er adding H20 to bring the volume to 100 mL. Save this stock solution for the rest of the class. 8. Take 5mL of the stock solution and note the color. Add about 1mL of 0.1M FeCl solution and observe the result. Take 5mL of the stock solution and note the color. Add about 1 mL of 0.1 M KSCN solution and observe the result. 8. Take 5mL of the stock solution and note the color. Add 0.1M AgNO, solution dropwise until alpnost all the color is gone. Split the solution into two test tubes including the precipitate. Add 2mL of 0.1M KSCN dropwise to one tube and observe the result. 0. Add 2mL of 0.1M FeCla dropwise to the second tube and observe the result. 1. Add 2 drops of 6M HNOs to roughly 3mL of 0.1M K CrO, solution and observe the sult. 12. Add 10% NaOH solution dropwise to the solution from step 1 1 until the original color is restored esuA0d 2 diopM .5,to roughy nt of o iM Kcro. ãs. Add 2 drops of 6M H2SO1 to roughly 3mL of 0.1M K2CrOa solution and observe the result. y4Add 10% NaOH solution dropwise to the solution from step 13 until the original color is restored 15. Add 3 mL of conc. HCI dropwise to 2mL (no more) of 0.1M CoCh and observe the result 18 Add water dropwise to the solution from step 15 until the reverse reaction is evident. 17. Take the test tube from step 16 and place it in a water bath on a Bunsen burner and heat. 6, Label a test tube #3, and then add afew mL of the Cu.2 solution to it. (blu) °19. Add 6 M NaOH drop wise until a precipitate of Cu(OH)2 is observed. 20. Add 6M NH3 drop wise (Use Caution!! Are those goggles still on!) until a change is observed. You will probably need to stir or shake your test tube. Record your observations 21. Add 6M HCI dropwise until a change is observed. Stir or shake as you add the HCI. Record all observations. Revision 1.00 · 17 Jan 2012
Irving HeathcoteLv2
23 Jul 2019