Study Guides (400,000)
US (230,000)
Rutgers (3,000)
3:40 (100)
Study Guide

01:160:311 Study Guide - Comprehensive Final Exam Guide - Solvent, Boiling Point, Evaporation


Department
Chemistry
Course Code
01:160:311
Professor
G Govindarajoo
Study Guide
Final

This preview shows pages 1-3. to view the full 24 pages of the document.
01:160:311

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

2
II. Safety Rules and Regulations
What clothing and safety attire should we wear in the lab?
Wear gloves and aprons when handling corrosive materials
Do not wear open toed shoes; your feet must be completely covered; wear shoes that have rubber
soles and no heels or sneakers.
Confine long hair and loose clothes. Do not wear shorts.
What eye protection should we wear?
Safety glasses should be constructed of plastic of tempered glass.
Eye protection must be worn at all times.
The three types of eye protection are:
Goggles
Safety glasses
Visor goggles.
What's the treatment for chemicals in eye?
If a chemical gets on a body part of eye, wash affected area with very large quantities of water,
using the safety shower and/or eyewash station until medical assistance arrives
What are the Do's and Don'ts of handling chemicals that are physically hazardous?
DO:
Remove contaminated clothing so that thorough washing can take place.
Wash reagent under fingernails.
Wipe up spills immediately with a very damp sponge (especially area around balances).
Clean up potassium and sodium hydroxide quickly.
Wear protective gloves, face mask, and neoprene apron when handling large quantities of
corrosive chemicals.
DON'T:
Attempt to neutralize reagent chemically.
Let reagents, such as sulfuric acid, run down the outside of a bottle or flask and come in
contact with your fingers.
Use a plastic syringe with a metal needle to dispense corrosive inorganic reagents (such
as concentrated acids or bases).
What's the treatment for burning clothing?--Including DOs and DONT's
Prevent person from running and fanning flames. Knock the person over, and make him/her stop,
drop, and roll. If safety shower nearby, hold person under shower until flames are extinguished
and chemicals washed away. Running while aflame can cause internal burns to lungs.
Don't use fire blanket to extinguish flame (this can cause flames to funnel up to mouth).
Do remove contaminated clothing and wrap person in blanket to avoid shock.
Don't use fire extinguishers on people (can be toxic or cause smothering).
DOs and DONTs of Burning Reagents
DO:
Handle strong acids, alkalis, dehydrating agents, and oxidizing agents carefully so as to
avoid contact with skin and eyes.
Dilute sulphuric acid by pouring acid into water, with stirring.
Wear approved safety glasses or goggles, protective gloves, and an apron when handling
these materials.
Add bases to water, rather than water to them; that is, the heavier substance should
always be added to the lighter one so that layers don't form where one liquid floats on
find more resources at oneclass.com
find more resources at oneclass.com
You're Reading a Preview

Unlock to view full version

Only pages 1-3 are available for preview. Some parts have been intentionally blurred.

3
another; the desired result ist a rapid mixing that occurs as a consequence of the law of
gravity.
DON'T
Breath in the corrosive vapors that attack the respiratory tract.
Add water to concentrated sulphuric acid (heat of reaction is so large that the acid may
boil and splatter).
What are the advantages of using a fume hood?
Draws of toxic and flammable fumes.
Affords excellent physical barrier on all four sides of a reacting system when the sash is pulled
down
How do you maximize the efficiency of the fume hood?
The ability of the hood to remove vapors is greatly enhanced if the apparatus is kept as close to
the back of the hood as possible, where the air movement is strongest.
What are the DOs and DONTs of using a fume hood?
Do:
Check to see if hood is working properly
Use aspirator tube or distillation to dispose of chemicals.
Pull down sash when not using hood
Store chemicals in ventilated storage areas.
Don't:
Use hood to dispose of chemicals by evaporation.
Permanently store chemicals in hood.
Clutter hood area with chemicals.
Why it was important to use dishwashing gloves over nitrile gloves for distillation experiment and when
IR plates are cleaned.
Distillation:
TO PROTECT YOUR HANDS FROM SHARP ITEMS AND BROKEN GLASSWARE
AND REDUCING BREAKAGE WHILE WASHING GLASSWARE. ALSO FOR
HANDLING THE STEEL SPONGE.
IR:
To reduce breakage of crystal plates. In addition, the solvent used to clean the IR plates is
extremely corrosive (methylene chloride.)--nitrile gloves will not be enough to protect
hands.
What can you do to prevent an explosion in a closed system?
Use glassware that can withstand the pressure. You can also evacuate the system under vacuum
before it is closed to the atmosphere.
What are the dangerous chemicals that organic chemists work with?
Teratogens cause birth defects or death to fetuses. Probably the most well-known teratogen is
Thalidomide, which is heavily restricted, but many common chemicals in the lab can do damage
to unborn babies. If you think you are pregnant, you should inform your instructor.
Mutagens are chemicals that cause a change in the genetic material of living beings (including
adults). Many mutagens are also carcinogenic (cause cancer).
Carcinogens are chemicals that are known to cause cancer. This is the main reason why benzene
is being replaced by toluene in the lab. Suspected carcinogens that you may encounter are
dichloromethane and chloroform. Take care when using these compounds.
Lachrymators cause pain to the respiratory tract, nose, and eyes, leading to crying, sneezing,
coughing, and even blind in high doses. Tear gas is an example of a lachrymator. Don't use these
chemicals outside a fume hood. Don't have an open bottle outside a fume hood.
find more resources at oneclass.com
find more resources at oneclass.com
You're Reading a Preview

Unlock to view full version