Page 36 - Color Atlas of Biochemistry

Physical Chemistry 27

A. Water and methane

δ
+0.3 H O CH 4 H
2
H
18 Da Molecular mass 16 Da
+100 °C Boiling point -162 °C

Heat of H
41 vaporization 8
-1
(kJ · mol ) H
δ H δ 6.2 Dipole moment 0 H
-0.6 +0.3 (10 -30 C · m)

Water (H O) Methane (CH )
2
4
B. Structure of water and ice

Liquid water
density 1.00 g · cm -3
short-lived clusters

2. 3.
Ethanol
Ice
Density 0.92 g · cm -3
hexagonal lattice,
stabilized by
1. hydrogen bonds

C. Hydration

Cation

O H
H O

H O
Glycerol

Anion
[Me (H O) ] 2
6
2

Koolman, Color Atlas of Biochemistry, 2nd edition © 2005 Thieme
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