benzyl phenyl methyl methyl methyl phenyl methyl phenyl ester amine methyl phenyl methyl V phenyl methyl V phenyl benzyl carboxyl O methyl V phenyl methyl V phenyl sulfid
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Group Number: 4
Names: Lobetaña, Manalo, Mansilongan, Mariano, Mendez, Mendoza, Nacu, Nang, Olarte Yr/Blk: 1st Year – Block 3
Faculty: Prof Nemia T Dacumos
1 Identify the functional groups in each molecule
a
b
c
benzyl
phenyl
methyl
methyl
methyl
phenyl
methyl
phenyl
ester
amine
methyl
phenyl
methyl
V
phenyl
methyl
V
phenyl
benzyl carboxyl
O
methyl
V
phenyl
methyl
V
phenyl
sulfide
carboxyl benzyl amide
amide
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2 What types of intermolecular forces are exhibited by each compound?
a b
c d
3 Rank the following compounds in order of increasing strength of intermolecular
forces:
a b
c
d
4 Intramolecular forces of attraction are often important in holding large molecules
together For example, some proteins fold into compact shapes, held together by
attractive forces between nearby functional groups A schematic of a folded protein is
drawn here, with the protein backbone indicated by a blue-green ribbon, and various
appendages drawn dangling from the chain What types of intramolecular forces occur
at each labeled site (A–F)?
hydrogen bond dipole-dipole interactions
dipole-dipole interactions van der Waals forces
3 1 2 2 3 1
1 3 2
3 2 1
* 1 being the lowest *
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a van der Waals
b hydrogen bonding
c ion-ion
d hydrogen bonding
e hydrogen bonding
f van der Waals
a
b
a
b
1 3 2 4
* 1 being the lowest *
3 2 1
* 1 being the lowest *
1 3 2 4
3 2 1
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7 Which of the following molecules can hydrogen bond to another molecule of
itself? Which can hydrogen bond with water?
Can Hydrogen bond to itself
Can hydrogen bond to water
8 Predict the water solubility of each of the following organic molecules
a b
c
insoluble in water
insoluble in water
soluble in water