Quantitative variation of vapor pressure with temperature- Boiling

public domain image via Wikipedia Creative Commons

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Water Properties

• Extremely high mp and bp:

	MW	m.p.	b.p.
Water	18	0°C	100°C
Methane	16	-183°C	-161°C

 

 

 

 

• High Heat capacity: 18 cal/°C mol vs. 8 cal/°C mol for methane

• High viscosity

• Solid form is less dense than the liquid form at the same temperature (ice floats on water - very rare)

• High dielectric constant (78.5 vs. 1.9 for hexane; 'blocks electric fields')

• High surface tension.

© R A Paselk

Last modified 4 November 2009