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Never handle sodium hydroxide pellets with your fingers. Use weighing paper and a scoopula. Solid sodium hydroxide will absorb water from the atmosphere. It is hygroscopic. Do not leave the container of sodium hydroxide open.

Keep ethanol and ethanol-water mixtures away from open flames.

Aqueous iron chloride will stain clothes permanently and is irritating to the skin. Avoid contact with this material.

 

In this experiment, you will saponify a vegetable oil

  • Pour 5 mL (5.0 g) of vegetable oil into a 250-mL beaker.
  • Slowly dissolve 2.5 g of NaOH pellets in 15 mL of the 50% ethanol/water mixture in a 50-mL beaker.
  • Add 2-3 mL of the NaOH solution to the beaker containing the oil. Heat the mixture over a hot plate with stirring. CAUTION: Keep your face away from the beaker and work at arm's length. Stirring is required to prevent spattering. Every few minutes, for the next 20 minutes, add portions of the ethanol/water mixture while continuing to stir to prevent spattering. After about 10 more minutes of heating and stirring, the oil should be dissolved and a homogenous solution should be obtained.
  • Add 25 mL of water to the hot solution. Using the hot grips, pour this solution into a 250 mL beaker containing 150 mL of saturated NaCl solution. Stir this mixture gently and permit it to cool for a few minutes.
  • Skim the soap layer off the top of the solution and place it in a 50-mL beaker.
  • Into a test tube, place a pea-sized lump of your soap. Place a similar amount of laundry detergent in a second tube and a similar amount of laundry detergent in a second tube and a similar amount of hand soap in a third tube. Add 10 mL of water to each tube. Stopper each tube and shake thoroughly.
  • Estimate the pH of the solution using wide-range indicator solution or wide-range test paper. Record the results. Pour the contents of the test tubes into the sink and rinse the tubes with water.

 

Pre-lab: introductory organic reactions

(total 25 points)

Hopefully here for the Pre-Lab

Name(Print then sign): ___________________________________________________

Lab Day: ___________________Section: ________TA__________________________

This assignment must be completed individually and turned in to your TA at the beginning of lab. You will not be allowed to begin the lab until you have completed this assignment.

For questions 1-4, draw the structural formulae of:

1) 2,2 - dimethylbutane

 

 

2) 3-ethyl-2,4-dimethylpentane

 

 

 

3) 2,3,4-trimethylhexane

 

 

4) 3-ethyl-2-methylheptane

 

 

For questions 5-8, give the names of

5) CH 3 CH 2 CH 2 CH 2 CH = CH 2 size 12{ ital "CH" rSub { size 8{3} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH"= ital "CH" rSub { size 8{2} } } {}

 

 

6) CH 3 CH = C = CH 2 size 12{ ital "CH" rSub { size 8{3} } ital "CH"=C= ital "CH" rSub { size 8{2} } } {}

 

 

7) CH 3 CH = CHCH 3 size 12{ ital "CH" rSub { size 8{3} } ital "CH"= ital "CHCH" rSub { size 8{3} } } {}

 

 

8) ( CH 3 ) 2 C = CHCH 3 size 12{ \( ital "CH" rSub { size 8{3} } \) rSub { size 8{2} } C= ital "CHCH" rSub { size 8{3} } } {}

 

 

For questions 9-11, give the structural formulae for:

9) hex-3-ene

 

 

10) 3-methylhex-1-ene

 

 

11) 2,5- dimethylhex-2-ene

 

 

For questions 12-14, give the names of:

12)

13)

14)

For questions 15-19, give the stuctural formulae of:

15) trans-1,2-dibromoethene

 

 

16) trans-1-chloroprop-1-ene

 

 

17) cis- hex-2-ene

 

 

18) pent-1-yne

 

 

19) 3-methylbut-1-yne

 

 

For questions 20-25, name the following compounds:

20)

21)

 22)

23)

24)

25)

Report: organic reactions

Hopefully here for the Report Form

Note: In preparing this report you are free to use references and consult with others. However, you may not copy from other students’work (including your laboratory partner) or misrepresent your own data (see honor code).

Name(Print then sign): ___________________________________________________

Lab Day: ___________________Section: ________TA__________________________

 

Observations:

Synthesis of esters 

Reagents Product Observations
C 7 H 6 O 3 size 12{C rSub { size 8{7} } H rSub { size 8{6} } O rSub { size 8{3} } } {} (salicylic acid ) + CH 3 OH size 12{ ital "CH" rSub { size 8{3} } ital "OH"} {} (methyl alcohol)    
CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 OH size 12{ ital "CH" rSub { size 8{3} } ital "CH" rSub { size 8{2} } ital "CH""" lSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "OH"} {} (1 - octanol ) + CH 3 COOH size 12{+ ital "CH" rSub { size 8{3} } ital "COOH"} {} (glacial acetic acid)    
CH 3 CH 2 CH 2 CH 2 CH 2 OH size 12{ ital "CH" rSub { size 8{3} } ital "CH" rSub { size 8{2} } ital "CH""" lSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "CH" rSub { size 8{2} } ital "OH"} {} (amyl alcohol) + CH 3 COOH size 12{+ ital "CH" rSub { size 8{3} } ital "COOH"} {} (glacial acetic acid)    
C 2 H 5 OH size 12{C rSub { size 8{2} } H rSub { size 8{5} } ital "OH"} {} (ethanol) + CH 3 COOH size 12{+ ital "CH" rSub { size 8{3} } ital "COOH"} {} (acetic acid)    

Oxidation of an alcohol with acidified potassium dichromate(vi) solution.

Remember to describe what happens and explain the color changes.

What conditions and techniques would favour the oxidation of ethanol to

a. ethanal rather than ethanoic acid.

b. ethanoic acid rather than ethanal?

Add 10 drops of dil. H 2 SO 4 size 12{H rSub { size 8{2} } ital "SO" rSub { size 8{4} } } {} to 5 drops of K 2 Cr 2 O 7 size 12{K rSub { size 8{2} } ital "Cr" rSub { size 8{2} } O rSub { size 8{7} } } {} to the following alcohols Observations: color/smellSmell cautiously! Observations: color/smell on warmingSmell cautiously!
Ethanol   
Methanol   
Propan-2-ol   

 

Oxidation of an alcohol with acidified potassium permanganate (vii) solution

Remember to describe what happens and explain the color changes.

What is your final product?

Add 10 drops of dil. H 2 SO 4 size 12{H rSub { size 8{2} } ital "SO" rSub { size 8{4} } } {} to 5 drops of KMnO 4 size 12{ ital "KMnO" rSub { size 8{4} } } {} to the following alcohols Observations: color/smellSmell cautiously! Observations: color/smell on warmingSmell cautiously!
Ethanol   
Methanol   
Propan-2-ol   

 

Saponification of a vegetable oil

Reagent pH from indicator paper
Your soap  
Laundry Detergent  
Hand Soap  

w from the File menu, and then double-click your template.

Questions & Answers

anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
Berger describes sociologists as concerned with
Mueller Reply
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Source:  OpenStax, Honors chemistry lab fall. OpenStax CNX. Nov 15, 2007 Download for free at http://cnx.org/content/col10456/1.16
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