ACS ORGANIC CHEMISTRY 1 FINAL EXAM
Questions and Answers
1.Which is the correct hybridization state and geometry for the
carbon atom in HCN?
sp, linear
sp2, trigonal
planar sp3,
tetrahedral
None of the above
ANS sp, linear
2.The 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.
ANS This structure has one positive charge and one negative charge.
3.The indicated Ãbond results from the overlap of
which orbitals? sp2-sp2
,sp-
sp3
sp-
sp2
sp2-sp3
ANS sp2-sp3
4.Of the following molecular geometries, which has the largest
bond angle? Pyramidal
Tetrahedral
Trigonal planar
Bent
ANS Trigonal
planar
5.How many Ãbonds are in the following
compound? 8
9
13
14
ANS 13
6.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.
ANS Y, because the dipole moments do not fully cancel.
7.How many hydrogen atoms are in the compound represented
by the follow- ing bond-line drawing?
5
6
7
8
ANS 6
8.The compound represented by the following bond-line
drawing has how many carbon atoms and how many Àbonds?
C
atoms
Àbond
s (a)
10 6
(b)
10
5
(c
)
Questions and Answers
1.Which is the correct hybridization state and geometry for the
carbon atom in HCN?
sp, linear
sp2, trigonal
planar sp3,
tetrahedral
None of the above
ANS sp, linear
2.The 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.
ANS This structure has one positive charge and one negative charge.
3.The indicated Ãbond results from the overlap of
which orbitals? sp2-sp2
,sp-
sp3
sp-
sp2
sp2-sp3
ANS sp2-sp3
4.Of the following molecular geometries, which has the largest
bond angle? Pyramidal
Tetrahedral
Trigonal planar
Bent
ANS Trigonal
planar
5.How many Ãbonds are in the following
compound? 8
9
13
14
ANS 13
6.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.
ANS Y, because the dipole moments do not fully cancel.
7.How many hydrogen atoms are in the compound represented
by the follow- ing bond-line drawing?
5
6
7
8
ANS 6
8.The compound represented by the following bond-line
drawing has how many carbon atoms and how many Àbonds?
C
atoms
Àbond
s (a)
10 6
(b)
10
5
(c
)
