CHEM 341L ETSU Separating Acids & Neutral Compounds by Solvent Extraction Lab

Dr. Irina SmoliakovaChem 341L, Survey of Organic Chemistry Lab
Report 4 (a total of 30 pts)
1. Introduction (10 pts):
a. (1 pt) Write your name, class number, lab section number, and the number and title of
the experiment.
b. (1 pt) Write the purpose(s) of the experiment.
c. (8 pts) Draw and complete the following table:
Name of the
Compound
Structure (not Physical
just formula) State
of
at Room
the Compound Temp.
Appearance
3-chlorobenzoic
acid
acetanilide
sodium
bicarbonate
hydrochloric
acid
sodium sulfate
diethyl ether
Boiling points Hazards
for liquids and
melting points
for solids
n/a
n/a
n/a
2. Observation (10 pts)
Describe everything shown in the recommended YouTube video:

3. Results/Conclusion
a) (1 pt) What is the purpose of using sodium sulfate in organic chemistry labs?
b) (2 pts) What is the purpose of using a rotavapor in general? What was the purpose of
using rotavapor in the experiment shown in the video?
c) (1 pt) What is the name of the apparatus used for the extraction?
d) (a total of 6 pts)
(i) Complete the following acid-base equations (3 × 1 pt) by writing the structures of
conjugate bases and acids.
(ii) Write pKa values of two acids in each equation (6 × 0.25 pt).
(iii) Predict and explain the equilibrium position in each reaction (3 × 0.5 pt).
O
+ NaOH
OH
Cl
O
O
+
H O
OH
O
Na
Cl
O
+ HCl
O
Na
Cl
2