1. Chapter 12 Organic Compounds with Oxygen and Sulfur
12.2
Properties of Alcohols, Ethers,
and Thiols
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Publishing as Benjamin Cummings

2. Boiling Points of Alcohols
contain polar OH groups.
form hydrogen bonds with other alcohol molecules.
have higher boiling points than alkanes and ethers of similar mass.
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Publishing as Benjamin Cummings

3. Boiling Points of Ethers
do not have a polar group.
have an O atom, but there is no H attached.
cannot form hydrogen bonds between ether molecules.
Copyright © by Pearson Education, Inc.
Publishing as Benjamin Cummings

4. Solubility of Alcohols and Ethers in Water
are more soluble in water than alkanes because the oxygen atom can hydrogen bond with water.
with 1-4 C atoms are soluble, but not with 5 or more C atoms.

5. Comparing Solubility and Boiling Points
Molar Boiling Soluble
Compound Mass Point (°C) in Water?
Alkane CH3─CH2─CH No
Ether CH3─O─CH Yes
Alcohol CH3─CH2─OH Yes

6. Solubility of Phenol Phenol is soluble in water.
has a hydroxyl group that ionizes slightly (weak acid).
is corrosive and irritating to skin.
+ H2O H3O+