5/16/26, 8:37 AM CHEM 210 Exam 3 Questions and answers with verified Answers (Latest Update 2026) UPDATE!! Flashcards | Quizlet
CHEM 210 Exam 3 Questions and answers with
verified Answers (Latest Update 2026) UPDATE!!
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Terms in this set (50)
Terminal alkyne pKa About 25
What proton on a terminal alkyne is The H directly attached to the sp carbon of the
acidic? triple bond
What base commonly deprotonates NaNH2
a terminal alkyne?
What is formed when a terminal An acetylide anion
alkyne is deprotonated?
Why are terminal alkynes more acidic Their conjugate base is sp hybridized with 50% s
than alkenes or alkanes? character, which stabilizes negative charge
What kind of species is an acetylide A strong nucleophile
anion in reactions?
What kind of alkyl halides work best Primary alkyl halides
for acetylide alkylation?
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, 5/16/26, 8:37 AM CHEM 210 Exam 3 Questions and answers with verified Answers (Latest Update 2026) UPDATE!! Flashcards | Quizlet
Why are secondary and tertiary alkyl Elimination competes and usually wins
halides bad for acetylide alkylation?
Terminal alkyne + NaNH2 then Forms a new C-C bond by alkylation
primary alkyl halide
What reagent set converts a terminal HgSO4, H2SO4, H2O
alkyne into a methyl ketone?
Product of terminal alkyne hydration Methyl ketone
with HgSO4, H2SO4, H2O
What reagent set converts a terminal 1) bulky borane 2) H2O2, OH-
alkyne into an aldehyde?
Product of terminal alkyne Aldehyde
hydroboration-oxidation
Hydration of an alkyne first gives An enol
what intermediate?
What usually happens to the enol It tautomerizes to a carbonyl compound
formed from alkyne hydration?
What is a tautomer? One of two isomers that interconvert by proton
shift and pi-bond shift
In keto-enol tautomerism, which The keto form
form is usually favored?
Lindlar catalyst reduces an alkyne to A cis alkene
what?
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CHEM 210 Exam 3 Questions and answers with
verified Answers (Latest Update 2026) UPDATE!!
Save
Terms in this set (50)
Terminal alkyne pKa About 25
What proton on a terminal alkyne is The H directly attached to the sp carbon of the
acidic? triple bond
What base commonly deprotonates NaNH2
a terminal alkyne?
What is formed when a terminal An acetylide anion
alkyne is deprotonated?
Why are terminal alkynes more acidic Their conjugate base is sp hybridized with 50% s
than alkenes or alkanes? character, which stabilizes negative charge
What kind of species is an acetylide A strong nucleophile
anion in reactions?
What kind of alkyl halides work best Primary alkyl halides
for acetylide alkylation?
https://quizlet.com/1180924743/chem-210-exam-3-questions-and-answers-with-verified-answers-latest-update-2026-update-flash-cards/ 1/5
, 5/16/26, 8:37 AM CHEM 210 Exam 3 Questions and answers with verified Answers (Latest Update 2026) UPDATE!! Flashcards | Quizlet
Why are secondary and tertiary alkyl Elimination competes and usually wins
halides bad for acetylide alkylation?
Terminal alkyne + NaNH2 then Forms a new C-C bond by alkylation
primary alkyl halide
What reagent set converts a terminal HgSO4, H2SO4, H2O
alkyne into a methyl ketone?
Product of terminal alkyne hydration Methyl ketone
with HgSO4, H2SO4, H2O
What reagent set converts a terminal 1) bulky borane 2) H2O2, OH-
alkyne into an aldehyde?
Product of terminal alkyne Aldehyde
hydroboration-oxidation
Hydration of an alkyne first gives An enol
what intermediate?
What usually happens to the enol It tautomerizes to a carbonyl compound
formed from alkyne hydration?
What is a tautomer? One of two isomers that interconvert by proton
shift and pi-bond shift
In keto-enol tautomerism, which The keto form
form is usually favored?
Lindlar catalyst reduces an alkyne to A cis alkene
what?
https://quizlet.com/1180924743/chem-210-exam-3-questions-and-answers-with-verified-answers-latest-update-2026-update-flash-cards/ 2/5
