UTA ORGANIC CHEMISTRY LAB 2181
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026/2027
Which of the following is not a consideration when selecting a solvent for recrystallization? -
ANS The compound of interest should be soluble in the solvent at low temperatures.
Hot filtration does not require a ______. - ANS buchner funnel
Which solvent has the highest boiling point? - ANS water
Recrystallization is used to purify ________ compounds. - ANS solid
Which of the following compounds is the least polar? - ANS Hexane
In an extraction procedure, it is advisable to: - ANS save all layers until an experiment is
complete.
Which of the following is incorrect for the description of diethyl ether (often called ether)? -
ANS Ether vapor is lighter than air
@2026 ALLRIGHTS RESERVED 1
, Organic chemists perform extractions of reaction mixtures several times to maximize product
yield. How many extractions would it generally take to acquire 99% yield of the product? -
ANS Three extractions.
The total numbers of stereoisomers of Tartaric Acid are: - ANS 3
The two molecules constituting the racemate you will be resolving in today's lab include: -
ANS (R)-(+)-1-phenylethylamine and (S)-(-)-1-phenylethylamine
In which solvent does the racemic 1-Phenylethylamine is dissolved during the formation of
Diastereomeric mixture in this experiment? - ANS Methanol
What is the relation between configuration and optical rotation? - ANS No relation
In this experiment, phosphoric acid is best classified as a(n) ________. - ANS catalyst
Cyclohexanol has a higher boiling point than cyclohexene due to _____. - ANS intermolecular
hydrogen bonding
The conversion of cyclohexanol to cyclohexene is considered a _______ reaction. -
ANS dehydration and elimination
Which of the following is/are commonly used as a test for unsaturation?
I. 2% KMnO4 in water
II. bromine in dichloromethane
III. cyclohexene - ANS I and II.
@2026 ALLRIGHTS RESERVED 2
EXAM QUESTIONS AND ANSWERS 100%
PASS 2026/2027
Which of the following is not a consideration when selecting a solvent for recrystallization? -
ANS The compound of interest should be soluble in the solvent at low temperatures.
Hot filtration does not require a ______. - ANS buchner funnel
Which solvent has the highest boiling point? - ANS water
Recrystallization is used to purify ________ compounds. - ANS solid
Which of the following compounds is the least polar? - ANS Hexane
In an extraction procedure, it is advisable to: - ANS save all layers until an experiment is
complete.
Which of the following is incorrect for the description of diethyl ether (often called ether)? -
ANS Ether vapor is lighter than air
@2026 ALLRIGHTS RESERVED 1
, Organic chemists perform extractions of reaction mixtures several times to maximize product
yield. How many extractions would it generally take to acquire 99% yield of the product? -
ANS Three extractions.
The total numbers of stereoisomers of Tartaric Acid are: - ANS 3
The two molecules constituting the racemate you will be resolving in today's lab include: -
ANS (R)-(+)-1-phenylethylamine and (S)-(-)-1-phenylethylamine
In which solvent does the racemic 1-Phenylethylamine is dissolved during the formation of
Diastereomeric mixture in this experiment? - ANS Methanol
What is the relation between configuration and optical rotation? - ANS No relation
In this experiment, phosphoric acid is best classified as a(n) ________. - ANS catalyst
Cyclohexanol has a higher boiling point than cyclohexene due to _____. - ANS intermolecular
hydrogen bonding
The conversion of cyclohexanol to cyclohexene is considered a _______ reaction. -
ANS dehydration and elimination
Which of the following is/are commonly used as a test for unsaturation?
I. 2% KMnO4 in water
II. bromine in dichloromethane
III. cyclohexene - ANS I and II.
@2026 ALLRIGHTS RESERVED 2
