Quiz 3 Flashcards
1
Q
PHYSICAL PROPERTIES
A
- Strong intermolecular forces generally result in higher boiling & melting points
- High degree of polarity generally results in substantial water solubility
2
Q
IMF
A
- LDFs (increases with MW, decreases slightly with branching)
- Dipole-dipole (increases with polarity)
- Hydrogen bonding
3
Q
non-polar
A
• C – C and C – H
4
Q
are polar
A
• C – O and O – H
5
Q
hydrogen bonding
A
• O – H
6
Q
LDFs only
A
propane= -42 C
butane= -1 C
pentane=36 C
2-methylbutane= 28
7
Q
di-di
A
dimethyl ether= -24 C
ethyl methyl ether= 7C
diethyl ether= 35 C
isopropyl methyl ether= 56 C
8
Q
H-bonding
A
ethanol= 78 C (very water soluble) 1-propanol= 97 C 1-butanol= 118 C 2-butanol= 99 C (slightly water soluble)
9
Q
• Hydrocarbons
A
Not miscible with water
10
Q
• Ethers:
A
Smaller ethers are slightly miscible with water
11
Q
• Alcohols
A
Small to mid-size are very miscible with water
12
Q
ether
A
[ – O – R “alkoxyl group”
13
Q
alcohol*
A
[ – O H “hydroxyl group”
14
Q
if a compound contains both an alkoxyl AND a hydroxyl group, it is considered
A
an alcohol.
15
Q
C – F BONDS
A
• Polar & very strong (doesn’t typically react)
