CHEM 334 Lab Final || A+ Graded.
Which of the following types of shoes are recommended by the American Chemical Society
for general laboratory work? correct answers leather shoes
OSHA stands for correct answers Occupational Safety and Health Administration
Examples of personal protective equipment do not include correct answers contact lenses
What is an embryotoxin? correct answers A material that is harmful to the developing
embryo at concentrations that have no adverse effects on the pregnant female
Clothing worn in the laboratory should: correct answers All of the above
What is a corrosive material? correct answers material that has a pH lower than 2 or greater
than 12 which can cause visible destruction or irreversible alteration of the living tissue
On hoods where sashes open vertically, work with the hood sash in the ___ position. correct
answers lowest possible
A "Class-D" fire extinguisher can be used to treat fires involving ___. as fuel source. correct
answers combustible metals
For small liquid spills that only affect a small area of skin, immediate flush with flowing
water for at least correct answers 15 minutes
When diluting an acid with water, correct answers always add acid to water, not water to
acid, so that the heat of reaction can be controlled
What does MSDS stand for? correct answers Material Safety Data Sheet
The culture of laboratory safety depends ultimately on the working habits of individual
chemists and their sense of teamwork for the protection of what group? correct answers all of
the above
Who is required to wear eye protection in the laboratory? correct answers Everyone, at all
times
Jewelry is a potential safety issue before correct answers Chemicals can be trapped under it
and can contact with sensitive skin
All chemical laboratories are equipped with fire extinguishers. Which one of the four types of
extinguishers most commonly used should not be found in a chemical laboratory? correct
answers water
The four routes by which toxic chemicals can enter the body include: correct answers
inhalation, ingestion, absorption, and injection
Material disposed of in the laboratory: correct answers Must always be handled in accordance
with safety guidelines specific to that class of compound
, When operating a fire extinguisher, remember the mnemonic PASS. PASS represents the
steps used to properly operate the extinguisher and it stands for which of the following?
correct answers Pull, Aim, Squeeze, Sweep
General guidelines for preventing accidents include: correct answers all of the above
Larger spills of a hazardous liquid on the skin correct answers require immediate use of the
safety shower
What is xylene (dimethylbenzene) used in the Diels-Alder reaction? correct answers find in
powerpoint
The compound below is exposed to Diels-Alder reaction conditions. This compound will not
react because correct answers this compound cannot adopt the s-cis conformation
Which of the following statements about the Diels-Alder reaction is false? correct answers
find in powerpoint
What is the missing reagent in the reaction below?
*add image correct answers both B and D
Maleic anhydride is an exceptionally reactive dienophile. Choose the right answer, which
explains why? correct answers It has two electron withdrawing groups.
Why is xylene (dimethylbenzene) used in the Diels-Alder reaction? correct answers It is a
high boiling solvent so the reaction will occur in a timely manner
Hydrocarbons do not dissolve in sulfuric acid, but methyl benzoate does. Explain this
difference. correct answers all of the above
What is the first step in the general mechanism for electrophilic aromatic substitution? correct
answers addition of the electrophile to the aromatic ring
What are the two effects that have to be considered to determine the influence a substituent
will have on electrophilic aromatic substitution? correct answers inductive and resonance
Why is the nitro group a meta director? correct answers because it removes more electron
density from the ortho and para positions than the met position, thus deactivating the meta
position less
What is the electrophile in aromatic nitration? correct answers NO2+
What is the driving force for losing a proton as the last step in electrophilic aromatic
substitution? correct answers to reform an aromatic system
Why is sulfuric acid used in aromatic substitution? correct answers to form the active
electrophile NO2+
Which of the following types of shoes are recommended by the American Chemical Society
for general laboratory work? correct answers leather shoes
OSHA stands for correct answers Occupational Safety and Health Administration
Examples of personal protective equipment do not include correct answers contact lenses
What is an embryotoxin? correct answers A material that is harmful to the developing
embryo at concentrations that have no adverse effects on the pregnant female
Clothing worn in the laboratory should: correct answers All of the above
What is a corrosive material? correct answers material that has a pH lower than 2 or greater
than 12 which can cause visible destruction or irreversible alteration of the living tissue
On hoods where sashes open vertically, work with the hood sash in the ___ position. correct
answers lowest possible
A "Class-D" fire extinguisher can be used to treat fires involving ___. as fuel source. correct
answers combustible metals
For small liquid spills that only affect a small area of skin, immediate flush with flowing
water for at least correct answers 15 minutes
When diluting an acid with water, correct answers always add acid to water, not water to
acid, so that the heat of reaction can be controlled
What does MSDS stand for? correct answers Material Safety Data Sheet
The culture of laboratory safety depends ultimately on the working habits of individual
chemists and their sense of teamwork for the protection of what group? correct answers all of
the above
Who is required to wear eye protection in the laboratory? correct answers Everyone, at all
times
Jewelry is a potential safety issue before correct answers Chemicals can be trapped under it
and can contact with sensitive skin
All chemical laboratories are equipped with fire extinguishers. Which one of the four types of
extinguishers most commonly used should not be found in a chemical laboratory? correct
answers water
The four routes by which toxic chemicals can enter the body include: correct answers
inhalation, ingestion, absorption, and injection
Material disposed of in the laboratory: correct answers Must always be handled in accordance
with safety guidelines specific to that class of compound
, When operating a fire extinguisher, remember the mnemonic PASS. PASS represents the
steps used to properly operate the extinguisher and it stands for which of the following?
correct answers Pull, Aim, Squeeze, Sweep
General guidelines for preventing accidents include: correct answers all of the above
Larger spills of a hazardous liquid on the skin correct answers require immediate use of the
safety shower
What is xylene (dimethylbenzene) used in the Diels-Alder reaction? correct answers find in
powerpoint
The compound below is exposed to Diels-Alder reaction conditions. This compound will not
react because correct answers this compound cannot adopt the s-cis conformation
Which of the following statements about the Diels-Alder reaction is false? correct answers
find in powerpoint
What is the missing reagent in the reaction below?
*add image correct answers both B and D
Maleic anhydride is an exceptionally reactive dienophile. Choose the right answer, which
explains why? correct answers It has two electron withdrawing groups.
Why is xylene (dimethylbenzene) used in the Diels-Alder reaction? correct answers It is a
high boiling solvent so the reaction will occur in a timely manner
Hydrocarbons do not dissolve in sulfuric acid, but methyl benzoate does. Explain this
difference. correct answers all of the above
What is the first step in the general mechanism for electrophilic aromatic substitution? correct
answers addition of the electrophile to the aromatic ring
What are the two effects that have to be considered to determine the influence a substituent
will have on electrophilic aromatic substitution? correct answers inductive and resonance
Why is the nitro group a meta director? correct answers because it removes more electron
density from the ortho and para positions than the met position, thus deactivating the meta
position less
What is the electrophile in aromatic nitration? correct answers NO2+
What is the driving force for losing a proton as the last step in electrophilic aromatic
substitution? correct answers to reform an aromatic system
Why is sulfuric acid used in aromatic substitution? correct answers to form the active
electrophile NO2+
