Can someone please help me with questions 3, 4, and 5!!??
yng dgit telther calÄium chloride or sodium sulfate). Let it sit and dry for 15- 20 minutes. Decant your liquid into a WEIGHED, dry round bottom ftask that will fit the Rotovap (larger diameter neck). Re determine your percent yield. Show smell it. Did your reaction work? Obtain an IR spectrum on your sample for your lab report. move the ether solvent using the Rotovap. Weigh the ester that remains in your flask to all theoretical yield and percent yield calculations. At this point, you can PostLab Questions 1. Why did you not find any acid in your final sample? Explain how you removed it. 2. How did you remove the alcohol from your final sample? Explain. 3. Draw a complete reaction mechanism for the ester reaction that you did. Include the role of the sulfuric acid and use arrows to demonstrate electron movement. Include all intermedjates and formal charges. 4. Read about infrared spectroscopy in your IR tutorial. Look at the reaction; what functional group is present in the reactants but not in the ester? At what wavenumber range in the IR spectrum does the peak appear and what will it look like? What is the purpose of the anhydrous sodium sulfate? Write the reaction to show how the sodium sulfate works. If sodium sulfate was not used what unwanted peak might be observed in the ester's IR spectrum? 5.