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UTA OCHEM LAB FINAL 2026
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
What reagent should be avoided during the aldol condensation
reaction? - correct answer-Acetone because it condenses with
two molar equivalents of piperonal in competition with
pinacolone. Undesirable product formed is a bright yellow solid
with a high melting point.
"Claisen-Schmidt condensation" - correct answer-a type of
crossed aldol condensations in which one of the carbonyl
compounds is non-enolizable produces a clean single
condensation product.
Between enolizable carbonyl compound (pinacolone-
ketone)and aromatic aldehyde (piperonal).
1H Nuclear Magnetic Spectroscopy can describe - correct
answer-The stereochemical outcome of the double bond
cis coupling constant - correct answer-J= 7-12 Hz
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because protons splitting peaks are close
producing a thin peak
trans coupling constant - correct answer-J= 14-18
because protons splitting peaks are farther apart in
stereochemistry producing a thicker peak
Grignard Solvent - correct answer-Diethyl ether- Grignard
reagents are soluble in ether and it does not react with ether.
Grignard Reagent - correct answer-Identify a component from
this weeks experiment that is used in substoichiometric
amounts.
Grignard Reaction - correct answer-Mg-I is the reducing agent,
it removes the oxygen from the unreactive Mg-O.
Victor Grignard - correct answer-Preparation of
organomagnesium compounds, between magnesium metal and
alkyl or aryl halide.
UTA OCHEM LAB FINAL 2026
ACTUAL QUESTIONS WITH
VERIFIED ANSWERS.
What reagent should be avoided during the aldol condensation
reaction? - correct answer-Acetone because it condenses with
two molar equivalents of piperonal in competition with
pinacolone. Undesirable product formed is a bright yellow solid
with a high melting point.
"Claisen-Schmidt condensation" - correct answer-a type of
crossed aldol condensations in which one of the carbonyl
compounds is non-enolizable produces a clean single
condensation product.
Between enolizable carbonyl compound (pinacolone-
ketone)and aromatic aldehyde (piperonal).
1H Nuclear Magnetic Spectroscopy can describe - correct
answer-The stereochemical outcome of the double bond
cis coupling constant - correct answer-J= 7-12 Hz
, Page | 2
because protons splitting peaks are close
producing a thin peak
trans coupling constant - correct answer-J= 14-18
because protons splitting peaks are farther apart in
stereochemistry producing a thicker peak
Grignard Solvent - correct answer-Diethyl ether- Grignard
reagents are soluble in ether and it does not react with ether.
Grignard Reagent - correct answer-Identify a component from
this weeks experiment that is used in substoichiometric
amounts.
Grignard Reaction - correct answer-Mg-I is the reducing agent,
it removes the oxygen from the unreactive Mg-O.
Victor Grignard - correct answer-Preparation of
organomagnesium compounds, between magnesium metal and
alkyl or aryl halide.
