CHEM 219 MODULE 2 FINAL TEST 2026
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◍ Pure covalent bond.
Answer: ***A bond that forms between atoms of identical electronegativity
values. (aka shared electrons)- electronegativity diff < 0.4 (zero)
◍ What are carbocyclic compounds?.
Answer: They are molecules whos carbon skeletons contain one or more
rings of carbon atoms.
◍ What is a functional group?.
Answer: It is a group of atoms connected in a specific pattern that gives a
molecule known properties and reactivity.
◍ B,A,C,D.
Answer: Rank the following substrates according to their increasing rate of
reaction in an Sn2 subsitution reaction. Briefly explain your ranking.
◍ True.
Answer: Determine if the following statement regarding substitution and
elimination mechanisms are true or falseBulky substrates prefer to react by
Sn1 or E1 mechanism is the departure of the leaving group.
◍ Hydrogenation produces what kind of stereoisomer?.
Answer: Cis isomers in molecules that exhibit stereochemistry in the final
product.
◍ On a piece of scrap paper, draw the resonance structure "b" that would result
from redistributing the electrons as shown on structure "a" in the diagram
below:For your structure "b", complete the table with the information
, requested:.
Answer: O: 1 lone pair, 1 single bond, 1 double bond, positive charge
(+1)C(I): 0 lone pair, 0 single bond, 2 double bond, positive charge (0)C(II):
1 lone pair, 3 single bond, 0 double bond, negative charge (-1)
◍ Phenol.
Answer: Aromatic compound
◍ condensed.
Answer: CH3CH2CH2CH3CH2CH3CH2
◍ Amine.
Answer: For the following reaction. predict what functional group the
product of the reaction would contain. Note that you are not being asked to
generate the IUPAC name of the product, simply to state what functional
group it would contain.
◍ What are heterocyclic compounds?.
Answer: Cyclic molecules in which one or more of the atoms making up the
ring are elements other than carbon.
◍ What are conformers?.
Answer: Different shapes of molecules that are derived by rotations of single
bonds.
◍ Oxacylohexane.
Answer: Name the following ether using IUPAC systematic nomenclature
◍ What is a substituent?.
Answer: Any group attached to the parent chain.
◍ Using the VSEPR method, predict the molecular geometry (shape and bond
angle) around the indicated atoms for the following structure:.
Answer: a) C(I) = 4 bond pairs = TETRAHEDRAL, 109.5°b) C(II) = 3 bond
pairs = TRIGONAL PLANAR, 120°c) N = 3 bond pairs/1 lone pair =
TRIGONAL PYRAMIDAL, 107°d) S = 2 bond pairs/2 lone pairs =
ANGULAR/BENT, 105°
QUESTIONS WITH CORRECT ANSWERS
GRADED A+
◍ Pure covalent bond.
Answer: ***A bond that forms between atoms of identical electronegativity
values. (aka shared electrons)- electronegativity diff < 0.4 (zero)
◍ What are carbocyclic compounds?.
Answer: They are molecules whos carbon skeletons contain one or more
rings of carbon atoms.
◍ What is a functional group?.
Answer: It is a group of atoms connected in a specific pattern that gives a
molecule known properties and reactivity.
◍ B,A,C,D.
Answer: Rank the following substrates according to their increasing rate of
reaction in an Sn2 subsitution reaction. Briefly explain your ranking.
◍ True.
Answer: Determine if the following statement regarding substitution and
elimination mechanisms are true or falseBulky substrates prefer to react by
Sn1 or E1 mechanism is the departure of the leaving group.
◍ Hydrogenation produces what kind of stereoisomer?.
Answer: Cis isomers in molecules that exhibit stereochemistry in the final
product.
◍ On a piece of scrap paper, draw the resonance structure "b" that would result
from redistributing the electrons as shown on structure "a" in the diagram
below:For your structure "b", complete the table with the information
, requested:.
Answer: O: 1 lone pair, 1 single bond, 1 double bond, positive charge
(+1)C(I): 0 lone pair, 0 single bond, 2 double bond, positive charge (0)C(II):
1 lone pair, 3 single bond, 0 double bond, negative charge (-1)
◍ Phenol.
Answer: Aromatic compound
◍ condensed.
Answer: CH3CH2CH2CH3CH2CH3CH2
◍ Amine.
Answer: For the following reaction. predict what functional group the
product of the reaction would contain. Note that you are not being asked to
generate the IUPAC name of the product, simply to state what functional
group it would contain.
◍ What are heterocyclic compounds?.
Answer: Cyclic molecules in which one or more of the atoms making up the
ring are elements other than carbon.
◍ What are conformers?.
Answer: Different shapes of molecules that are derived by rotations of single
bonds.
◍ Oxacylohexane.
Answer: Name the following ether using IUPAC systematic nomenclature
◍ What is a substituent?.
Answer: Any group attached to the parent chain.
◍ Using the VSEPR method, predict the molecular geometry (shape and bond
angle) around the indicated atoms for the following structure:.
Answer: a) C(I) = 4 bond pairs = TETRAHEDRAL, 109.5°b) C(II) = 3 bond
pairs = TRIGONAL PLANAR, 120°c) N = 3 bond pairs/1 lone pair =
TRIGONAL PYRAMIDAL, 107°d) S = 2 bond pairs/2 lone pairs =
ANGULAR/BENT, 105°
