ACS Organic Chemistry 2 ACS Final Exam Actual 2026 Latest Questions and Verified Answers (Latest 2026 / 2027 Update) A+ Grade 100% Guarantee Verified by Experts

ACS ORGANIC CHEMISTRY 2 FINAL EXAM
Questions and Answers

1.How can an aldehyde be protected?
ANS Using a diol and H+


2.What does permanganate do? (KMnO4, NaOH)
ANS Oxidizes aldehydes and primary alcohols to carboxylic acids


3.How can an acetal (being used as a protecting group) be
hydrolyzed back to it's original form?
ANS H2O and H+ and heat


4.At what frequency is an OH or NH bond in IR spec?
ANS 3400


5.At what frequency is a CH (sp3) bond in IR spec?
ANS 3000-2850


6.At what frequency is a CH (sp2) bond in IR spec?
ANS 3100-3000


7.At what frequency is a CH (sp) bond in IR spec?
ANS 3300
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,8.At what frequency is a C-C triple bond or C-N triple bond in IR
spec?
ANS 2100


9.At what frequency is C=O bond in IR spec?
ANS 1700


10.At what frequency is a C=C bond or aromatic C-C bond in IR
spec?
ANS 1600


11.At what frequency is an aromatic C-C bond in IR spec?
ANS 1500


12.At what frequency is carboxylic acid in IR spec?
ANS 1720 + a strong and broad band at 2500-3300


13.At what frequency is an amide bond in IR spec?
ANS two medium strength bands around 3400 + the carbonyl band
below 1700


14.At what frequency is an sp3 C atom in a proton NMR spec?
ANS 1


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, 15.At what frequency is a C atom attached to a pi system in a
proton NMR?
ANS 2


16.At what frequency is a C atom attached to an O atom in a
proton NMR?
ANS 3-4


17.At what frequency is an sp2 C atom in a proton NMR?
ANS 5-6


18.At what frequency is an aromatic C atom in a proton NMR?
ANS 7-8


19.At what frequency is an aldehyde C atom in a proton NMR?
ANS 10


20.At what frequency is a carboxylic O atom in a proton NMR?
ANS 11-12


21.At what ppm is an sp3 alkyl C atom in carbon NMR?
ANS 10-30


22.At what ppm is an sp3 C atom attached to O, N, or X in carbon
NMR?
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