11 Affix stopper to reaction flask and swirl for several minutes to mix

11 affix stopper to reaction flask and swirl for

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11. Affix stopper to reaction flask and swirl for several minutes to mix reactants. 12. Using a 1.00 mL volumetric pipette with pipetting device or bulb, transfer 1.00 mL of the reaction mixture to each of the 250 mL Erlenmeyer flasks labeled “titration #1” and “titration #2”. 13. Immediately restopper reaction flask to prevent evaporation. 14. Add 5–6 drops of phenolphthalein indicator to each titration flask. 15. Record the initial level of the NaOH solution in the burette. 16. Place titration flask #1 under the tip of the burette and slowly begin to deliver the solution into the reaction mixture. 17. Once the endpoint has been reached, record the final level of NaOH solution on the burette. 18. Refill the buret with NaOH to the 0.00 mL mark and repeat steps 15 – 17 with titration flask #2. 19. Determine the molarity of acetic acid (HAc) in the reaction mixture. 20. Discard titration flasks #1 & #2 into the sink. 21. Refill the burette with 0.1000 M 11. Done 12. Done 13. Done 14. Done 15. Done. 0.0ml 16. Done 17. Done 18. Done 19. Done. Data tables 20. Done
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NaOH solution. 22. Clean and dry the 1.00 mL volumetric pipette and both 250 mL Erlenmeyer flasks. 23. Add approximately 25.0 mL of deionized water to each titration flask. 24. Create an ice–water bath large enough to accommodate the 125 mL Erlenmeyer flask (reaction flask). 25. While swirling, add 5 drops of concentrated sulfuric acid to the reaction mixture. 26. Immediately after, pipette 1.00 mL of the reaction mixture to each of the 250 mL Erlenmeyer flasks labeled “titration #1” and “titration #2”. 27. Re–stopper reaction mixture to prevent evaporation. 28. Repeat steps 14–18 above. 29. Calculate the volume of NaOH solution necessary to titrate the sulfuric acid by subtracting the mean volume used for acetic acid alone from the mean volume of the mixture of acids. 30. Discard titration flasks #1 & #2 into the sink. Procedure for Equilibrium Reaction Mixture : 1. Obtain two clean and completely dried 250 mL Erlenmeyer flasks, a buret with stand, two 100 mL beakers, and a 25 mL graduated cylinder. 21. Done 22. Done 23. Done 24. Done 25. Done 26. Done 27. Done 28. Done 29. Done 30. Done 1. Done
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2. Using a wax pencil, label the two 250 mL Erlenmeyer flasks as “titration #1” and “titration #2”. 3. Obtain approximately 100.0 mL of a standard 0.1000 M NaOH solution into one of the dry 100 mL beakers.
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  • Spring '19
  • Jones, Amanda
  • Sulfuric acid

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