ORGANIC CHEMISTRY 1 ACS FINAL
EXAM 2026 QUESTION AND ANSWERS
sp, linear - answerWhich is the correct hybridization state and geometry for the carbon
atom in HCN?
sp, linear
sp2, trigonal planar
sp3, tetrahedral
None of the above
This structure has one positive charge and one negative charge. - answerThe following
structure has been drawn without formal charges. Which statement describes the
missing formal charge(s)?
This structure has one positive charge and one negative charge.
This structure has one positive charge but no negative charges.
This structure has one negative charge but no positive charges.
This structure has no formal charges.
sp2-sp3 - answerThe indicated σ bond results from the overlap of which orbitals?
sp2-sp2
sp-sp3
sp-sp2
sp2-sp3
Trigonal planar - answerOf the following molecular geometries, which has the largest
bond angle?
Pyramidal
Tetrahedral
Trigonal planar
Bent
13 - answerHow many σ bonds are in the following compound?
8
9
13
14
Y, because the dipole moments do not fully cancel. - answerWhich 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 - answerHow many hydrogen atoms are in the compound represented by the
following bond-line drawing?
5
6
7
8
D) 9 5 - answerThe 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 - answerAll of the following are significant resonance structures of the benzyl
carbocation, EXCEPT:
A - answerWhich of the following resonance structures is the most significant contributor
to the resonance hybrid?
D - answerWhich of the following structures exhibits an sp3-hybridized nitrogen atom?
C - answerWhich is a bond-line drawing of (CH3)2CHCH2OC(CH3)3?
C - answerWhich of the following has the correct curved arrow(s) placement to show
resonance for the given allylic carbocation?
A - answerWhich of the following anions is resonance delocalized?
A - answerThe following cation has a total of how many resonance structures?
D - answerWhich of the following best represents the resonance hybrid of the given
anion?
B - answerWhich of the following does NOT represent a pair of resonance structures?
C - answerWhat is the strongest base that is present after methyl magnesium bromide
(CH3MgBr) is treated with water?
The right side - answerWhich side of the following equilibrium is favored?
EXAM 2026 QUESTION AND ANSWERS
sp, linear - answerWhich is the correct hybridization state and geometry for the carbon
atom in HCN?
sp, linear
sp2, trigonal planar
sp3, tetrahedral
None of the above
This structure has one positive charge and one negative charge. - answerThe following
structure has been drawn without formal charges. Which statement describes the
missing formal charge(s)?
This structure has one positive charge and one negative charge.
This structure has one positive charge but no negative charges.
This structure has one negative charge but no positive charges.
This structure has no formal charges.
sp2-sp3 - answerThe indicated σ bond results from the overlap of which orbitals?
sp2-sp2
sp-sp3
sp-sp2
sp2-sp3
Trigonal planar - answerOf the following molecular geometries, which has the largest
bond angle?
Pyramidal
Tetrahedral
Trigonal planar
Bent
13 - answerHow many σ bonds are in the following compound?
8
9
13
14
Y, because the dipole moments do not fully cancel. - answerWhich 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 - answerHow many hydrogen atoms are in the compound represented by the
following bond-line drawing?
5
6
7
8
D) 9 5 - answerThe 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 - answerAll of the following are significant resonance structures of the benzyl
carbocation, EXCEPT:
A - answerWhich of the following resonance structures is the most significant contributor
to the resonance hybrid?
D - answerWhich of the following structures exhibits an sp3-hybridized nitrogen atom?
C - answerWhich is a bond-line drawing of (CH3)2CHCH2OC(CH3)3?
C - answerWhich of the following has the correct curved arrow(s) placement to show
resonance for the given allylic carbocation?
A - answerWhich of the following anions is resonance delocalized?
A - answerThe following cation has a total of how many resonance structures?
D - answerWhich of the following best represents the resonance hybrid of the given
anion?
B - answerWhich of the following does NOT represent a pair of resonance structures?
C - answerWhat is the strongest base that is present after methyl magnesium bromide
(CH3MgBr) is treated with water?
The right side - answerWhich side of the following equilibrium is favored?
