CHEM 121 Lab Report 6: Measuring Kand Shifting Chemical Equilibria FALL 2023 _Portage

Experiment #: 6 Title: Measuring Kc and Shifting Chemical Equilibria Purpose: In this lab we will determine the equilibrium constant for Kc. Also, we will study and do an experiment related to Le Chatelier’s Principle. Procedure: Equilibrium Reactions: 1. Obtain a small flask. 2. Put 10ml of propyl alcohol in the flask. 3. Put 10ml of acetic acid in the same flask. 4. Swirl the flask to combine substances. 5. Obtain a beaker. 6. Put 25 ml of water into the beaker. 7. Use a pipet and take 1ml of the mixture from the flask and put it into the beaker. 8. Obtain NaOH 9. Titrate NaOH from a buret into the beaker until the solution turns a permanent pink color. 10. Record the amount of NaOH that was used. 11. Obtain sulfuric acid catalyst. 12. Add sulfuric acid catalyst to the propyl alcohol/acetic acid mix in the small flask. 13. Use a pipet and take 1ml of the solution from the flask and put it into a beaker with 25 ml of water. 14. Titrate NaOH from a buret into the beaker until the solution turns a permanent pink color. 15. Record the amount of NaOH that was used. 16. Heat the propyl alcohol/acetic acid/sulfuric acid solution for 1 hour with a condenser placed above it. 17. Titrate NaOH from a buret into the beaker until the solution turns a permanent pink color. 18. Record the amount of NaOH that was used. Shifting Equilibrium Reactions: 1. Obtain a test tube with Fe+3 2. Obtain a test tube with Thiocyanate (SCN) 3. Mix these test tubes together to form Fe(SCN)-3 4. Dilute the solution in a test tube. 5. Add thiocyanate to the diluted solution using a pipette. 6. Record your results. 7. Obtain a test tube with Cu(H2O)4 +2 (tetra aquo copper (II)) 8. Obtain a test tube with Cl9. Mix the solutions together to form Cu(Cl)4 -2 10. Record the results. 11. Add H2O