Please help me draw a detailed separation scheme for the
synthesis of t-butyl chloride. Below is the lab procedure.
PROCEDURE (Part A-Synthesis of t-butyl
chloride):
Measure out 10g of t-butyl alcohol in a 50-mL graduated cylinder
and pour into a 125-mL separatory funnel. NOTE:
You need to use the density of t-butyl alcohol what volume is this?
Measure out 50-mL of cc. HCl in a 100-mL beaker and place in an ice
bath for several minutes. Then pour the acid slowly into the
separatory funnel, mix and vent frequently first by removing the
cap a few times before inverting and opening the stopcock to
release pressure.
PROCEDURE (Part B-Extraction):
Complete the extract as quickly as possible because the tertiary
chloride is both insoluble in both water and aqueous sodium
bicarbonate. It is possible that your product might hydrolyze back
to the alcohol. Have all of your equipment ready on hand for
starting the extraction. In each step, the organic layer should be
on top. However, add a few drops of water to confirm this. Allow
the organic and aqueous layers to completely separate before adding
sodium bicarbonate.
NOTE: It can be difficult to observe the layer between
the product and solvent since their refractive indexes are similar
in value.
Draw off the lower aqueous layer into a 400-mL beaker. Wash the
crude product with 15mL of cold water and pour directly into the
separatory funnel. Mix or shake the separatory funnel and then
drain the aqueous layer into a 400-mL or larger beaker. Next, add
15mL of 5% sodium bicarbonate solution until no more CO2 gas is
observed. Mix sufficiently and drain the aqueous lower layer from
the funnel into the same 400-mL beaker. Finally, add 15 mL of
saturated NaCl solution “brine” to the separatory funnel. Mix and
discard the lower aqueous layer into the 400-mL beaker.
PROCEDURE (Part C-Drying the Product and
Distillation):
Add 1-2 grams of anhydrous calcium chloride (or anhydrous sodium
sulfate or anhydrous magnesium sulfate) to the crude liquid product
in the 50-mL Erlenmeyer flask. Swirl the mixture until the solution
is clear and free of any water. Take the clear, dry product through
a funnel containing a small Pasteur pipet with a small cotton plug
to collect the calcium chloride and collect the liquid in a 50-mL
round bottom flask (pre-weighed). Additionally, weigh a vial with
cap. Setup a simple distillation apparatus. Add a magnetic stir bar
to the round bottom flask and heat the sample. Collect the portion
that boils at approximately 48- 52oC. Record the temperature when
the first drop is collected in the reservoir in the Hickman head if
using a microkit in a tared 50-mL Erlenmeyer flask. If not
available, use a macrokit and set up a simple distillation
apparatus and collect the distillate into a tared 50-mL Erlenmeyer
flask. Save the product for IR and refractive index analysis. Weigh
the pure product. If applicable, save for the lab on reactivity of
halides in silver nitrate lab.
Please help me draw a detailed separation scheme for the synthesis of t-butyl chloride. Below is the lab procedure. PROC
-
answerhappygod
- Site Admin
- Posts: 899604
- Joined: Mon Aug 02, 2021 8:13 am
Please help me draw a detailed separation scheme for the synthesis of t-butyl chloride. Below is the lab procedure. PROC
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!