Organic Chemistry 1 ACS Exam (2026/2027) | Updated Questions | Study Pack | A+

Organic Chemistry 1 ACS Exam
(2026/2027) | Updated Questions |
Study Pack | A+
• sp2-sp3 -✓✓The indicated σ bond results from the overlap of which
orbitals?
sp2-sp2
sp-sp3
sp-sp2
sp2-sp3


• Trigonal planar -✓✓Of the following molecular geometries, which has
the largest bond angle?
Pyramidal
Tetrahedral
Trigonal planar
Bent


• 13 -✓✓How many σ bonds are in the following compound?
8
9
13
14

,• Y, because the dipole moments do not fully cancel. -✓✓Which
compound has the higher boiling point? Explain briefly.
X, because the dipole moments are far apart.
Y, because the dipole moments do not fully cancel.
Y, because it is less branched.
X, because it is more linear.


• 6 -✓✓How many hydrogen atoms are in the compound represented by
the following bond-line drawing?
5
6
7
8


• D) 9 5 -✓✓The compound represented by the following bond-line
drawing has how many carbon atoms and how many π bonds?
C atoms
π bonds
(a)
10 6
(b)
10 5
(c)
96

, (d)
95


• C -✓✓All of the following are significant resonance structures of the
benzyl carbocation, EXCEPT:


• A -✓✓Which of the following resonance structures is the most
significant contributor to the resonance hybrid?


• D -✓✓Which of the following structures exhibits an sp3-hybridized
nitrogen atom?


• C -✓✓Which is a bond-line drawing of (CH3)2CHCH2OC(CH3)3?


• C -✓✓Which of the following has the correct curved arrow(s)
placement to show resonance for the given allylic carbocation?


• A -✓✓Which of the following anions is resonance delocalized?


• A -✓✓The following cation has a total of how many resonance
structures?


• D -✓✓Which of the following best represents the resonance hybrid of
the given anion?