Final Lab AssignmentName:For the first section, answer in YOUR OWN WORDS These are ALL common problems in an organic lab.1. Please define "reflux."2. When you are refluxing, your reactants have become a brown solid. What might have gonewrong? What do you need to do when you redo the lab?3. You completed a lab which required refluxing. At the end, you realize that you still have yourreactants. No product was formed. What might have gone wrong? What do you need to dowhen you redo the lab?4. You are refluxing. After a few minutes of heating, your round bottom flask shatters. What mighthave gone wrong? What do you need to do when you redo the lab?5. Define bumping as it applies to organic chemistry.6. You are refluxing your reactants and the solution is bumping. What might have gone wrong?What do you need to do when you redo the lab?7. You are working on isolating your product by distillation. No distillate is collected. Assuming thatthere is product, what might have gone wrong? What do you need to do when you redo theisolation process?8. You are trying to recrystallize your product. No crystals are forming. Assuming that there isproduct, what might have gone wrong? What do you need to do to isolate your product?9. You are trying to recrystallize your product. As you place your flask into an ice water bath,shatters. What might have gone wrong? What are you going to do differently when you redoitthis lab?10. You need to recrystallize your product at a temperature less than 0° degrees Celsius. What areyou going to do?11. You are checking your product by determining the melting point range. It is difficult to get theproduct to the bottom of the capillary tube. What might have gone wrong? What do you needto do now?12. You are checking your product by determining the melting point range. The melting point rangeis over 10 degrees. What might have gone wrong? What do you need to do now?13. You are calculating your percent yield. It is over 100. What might have gone wrong? What doyou need to do now? 15. You isolated your product. It is the wrong color. What might have gone wrong? What do youneed to do now?16. You have finished a synthesis. You are expecting crystals. Your product is an oily liquid. Whatmight have gone wrong? What do you need to do now?17. You are working on a synthesis. It needs to reflux for 3 hours. You are a carbon-based life formthat requires food, drink, and visits to the restroom. What do you do?18. You perform a TLC comparison to confirm purity and identity of your product. All your spotsexpand into long smudges. The Rf values are inconclusive. What might have gone wrong? Whatdo you need to do now?19. You have left your product to dry for a week. When you return, there is nothing left. What mighthave gone wrong? What should you have done to prevent this?20. Shepherd University has resources to help you prepare for organic chemistry experiments.Please list 3 different free resources available to you if you need help in the spring.The next section is True or False. Explain your answer.1. It is okay to use different scales during one experiment.2. If you forget to record the mass of your vial before adding your product, you can just determinethe mass with the product, clean the vial, and then subtract the mass of the clean vial from themass of the vial with your product.3. The last steps in cleaning glassware is rinsing with distilled water and drying in an air stream orwith paper towels.4. Safety glasses are as good as safety goggles in an organic laboratory.5. If the water in your warm water bath cools down, just reheat it with a Bunsen burner.6. Rather than opening and closing and opening and closing and opening and closing the windowto the hood in an organic lab, just leave it open.7. When you need to determine the number of moles of a reactant, determining the volume andusing density is as accurate as determining the mass.8. It doesn't matter how much drying agent you use as long as you use more than enough.9. Scraping your product from a glass-fritted disk or from a piece of filter paper will work if youforget to determine the mass of the disk or the filter paper before isolating your product.10. Rather than taking good notes, just photograph your experiment frequently.

Answered: 1. Please define "reflux."

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...