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Help needed ASAP Help needed ASAP Help needed ASAP Help needed ASAP Organic Chemistry Lab 1- CHEM 211(Section 01) Final Exam, July 3, 2018 Name: ID W: Lab Instructor: Date: PART A Name the following glassware items: A ORGANIC CHEMISTRY LABORATORY APPARATUS (2 pts each) PARTE,? HANDLINGOFwASTESupt each) (1) As a student in an organic chemistry teaching lab, you are considered a hazardous waste generator a. true b. false (2) It generally costs more to dispose of a chemical than it costs to buy it in the first place. a. true b. false (3) If you rinse a chemically-contaminated flask with water: a. always rinse it immediately in the sink, flushing the water down the drain b. rinse it with a small amount of water at first and put these rinses in the aqueous waste, using just enough water to remove the bulk of the chemical from the flask, then rinse the flask in the sink rinse the flask with a lot of water and put all the rinses in the aqueous waste c. d. (4) You have put a sample into the Recycled Hexanes jug. Now, you rinse your flask with acetone. Where cdo you put the acetone rinses? a. in the "Hazardous Waste, Organic" carboy b. in the "Recycled Hexanes" jug c. in the "Used Acetone" jug

Explanation / Answer

Ans. # Part A: 1: Round bottom flask (can be boiling flask, distillation flask, washing flask, etc. depending on the make & need)

            #2. Adaptor

            #3. Buchner flask (Vacuum flask)

# Part B: #1. True. Any chemical that is no longer useable is considered a hazardous waste. One or more chemicals (like the reaction mixture) can no longer be re-used after the experiment, so they act as hazardous waste. So, being a student in organic chemistry lab who carries out an experiment, you act as a hazardous waste generator.

#2. True. A proper disposal of hazardous chemicals may cost more than its procurement cost because the disposal procedure involves wastage of plenty of water as well as may contaminate the environment at one or more points if not done properly- thus causing collateral damages to natural resources.

#3. Correct option- D. The aqueous chemical wastes are generally collected in aqueous waste bottles. For cleaning such glassware, it is sequentially rinsed with water and all the resultant water is carefully transferred to the aqueous waste bottle meant for that.

Do NOT flush any chemical in the sink unless specified so by the instructor.

#4. Correct option- A. in the “Hazardous waste, Organic” carboy.

The flask, which was previously used to deliver a sample to the recycled hexanes jug, is rinsed with acetone. So, the resultant acetone is also contaminated with the sample. Therefore, acetone is no longer pure and useable, and shall be disposed as hazardous organic waste.

# The recycled hexanes jug is being used to store the sample. So, acetone can’t be poured into it.

# Acetone used to rinse the flask gets contaminated with the sample. Therefore, acetone is no longer pure and useable, and shall be disposed as hazardous organic waste.

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