Green Organic Chemistry_ CHEM-2071-001 Fall 2016_2 - :CHEM2071001Fall2016 Due Nov7at6am AllowedAttempts 2 Points 25 Questions 25 Available

Green Organic Chemistry_ CHEM-2071-001 Fall 2016_2 -...

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Unformatted text preview: 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Green Organic Chemistry Due Nov 7 at 6am Allowed Attempts 2 Points 25 Questions 25 Available until Nov 7 at 6am Time Limit 25 Minutes Attempt History Attempt Time Score KEPT Attempt 2 11 minutes 25 out of 25 LATEST Attempt 2 11 minutes 25 out of 25 Attempt 1 16 minutes 24 out of 25 Correct answers are hidden. Score for this attempt: 25 out of 25 Submitted Nov 6 at 9:01pm This attempt took 11 minutes. Question 1 1 / 1 pts When brushing our teeth we use water to rinse. Would you say that turning the faucet off while brushing is considered "green" way of life compared to when we do not do so. No, because water is not hazardous I do not brush my teeth Yes, because no water is wasted No, because you either way wash down contaminated water Question 2 1 / 1 pts What is the general definition of a green organic chemistry reaction? Environmentally friendly, cheap and safe chemicals used and conducted at normal conditions Where the product is green 1/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Alergic reaction to greens A reaction that requires a lot of chemicals Question 3 1 / 1 pts To what setting is the sand bath's rheostat set? 60 10 80 120 Question 4 1 / 1 pts Where is the sand bath's jack plugged in? 10 Amp Regular power supply In my iPhone ­ ther is an app for that 20 Amp Question 5 1 / 1 pts What flask are you going to use for reaction pot? 15 mL beaker 10 mL round bottom flask 2/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 15 mL Erlenmayer flask 15 mL round bottom flask Question 6 1 / 1 pts For today's experiment you will setup what kind of apparatus: Reflux Separatory funnel Fractional Distillation Simple Distillation Question 7 1 / 1 pts If chemical is spilled in your eye(s): Rinse with cold water for 15 min Rinse with Base for 15 min Rinse with Acid for 15 min Rub your eyes Question 8 1 / 1 pts What does a rise in temperature on your thermometer mean in this lab? The reaction is exothermic Solvent is distilling 3/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Sample is melting It's about to catch on fire Question 9 1 / 1 pts What kind of water must be used in your reaction solution? Deionized Distilled Filtered water Tap water Question 10 1 / 1 pts For how long are the crystals filtered? For about a min For about 15 min For about 5 min I do not know Question 11 1 / 1 pts There are 12 principles of green chemistry. Prevention is one of them and it refers to: Minimization of waste and sideproduct's production Maximum waste production 4/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Prevent low waste generation I have no idea Question 12 1 / 1 pts How do you collect the product at the end of this experiment? Through reflux Through vacuum filtration Through hot filtration Through simple distillation Question 13 1 / 1 pts When do you begin timing the reflux period? As soon as the round bottom flask touches the sand When the boiling solvent drips down into the column to the flask When solvent starts bubbling only When drops enter the collection vial Question 14 1 / 1 pts There are 12 principles of green chemistry. Maximize Atom Economy is one of them and it refers to: Maximum production from the reagents used Maximum production of waste 5/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Minimum production from the reagents used Maximum production from the catalysts used Question 15 1 / 1 pts What kind of towel must be wrapped around your apparatus to keep it cool? Brown paper towel soaked in hot water Brown paper towel soaked in ice­cold water The cloth towel White paper towel soaked in ice­cold water Question 16 1 / 1 pts The proper dress code for OCL requires: Wearing any type of gloves Wearing closed toe shoes and long jeans Flip flops and/or sandals Wearing Google glasses Question 17 1 / 1 pts To maximize crystal formation from a solution one should: Scratching the inside of the reaction tube with glass rod Scratching the inside of the reaction tube with spatula 6/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Scratching the inside of the reaction tube with wooden stick Scratching the inside of the reaction tube with nail Question 18 1 / 1 pts There are 12 principles of green chemistry. Design Safer Synthesis is one of them and it refers to: Increase usage of toxic materials Decrease usage of toxic materials Ask your TA Decrease usage of non­toxic materials Question 19 1 / 1 pts To maximize crystal formation from a solution one should: Warm up the solution Cool the solution very fast in ice bath Cool the solution very slowly (in glass wool nest) Pour more solvent Question 20 1 / 1 pts What is 80% of 25? 1/4 20 7/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 100 80 Question 21 1 / 1 pts The Diels­Alder reaction is a reaction between: Diene and dienophobe Dienophile and claustrophobe Diels and Alder Diene and dienophile Question 22 1 / 1 pts How strong vacuum do you have to apply to your sample: Until you see the "breeze" in the reaction mixture So that the whole sample is sucked in the vacuum line As hard as I can pull Until you see the "breeze" in the mother liquour Question 23 1 / 1 pts To maximize crystal formation one can: Warm up the solution Filter fast 8/9 11/6/2016 Green Organic Chemistry: CHEM­2071­001 Fall 2016 Scratch the reaction tube's walls with spatula Cool the solution in ice bath Question 24 1 / 1 pts How many mol 9­(hydroxymethyl)anthracene would you use? 1/1000 mol 0.1 mol 0.001 mol 1/10000 mol Question 25 1 / 1 pts If the solution/solvent does not start to boil, but the bottom of the round bottom flask is touching the sand, one must: Stir the sand with the metal spatula Do nothing Plug in the sand bath in the 20A outlet Increase the rheostat above 60 Quiz Score: 25 out of 25 9/9 ...
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