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Plant–Water Relations

  1. John B Passioura

Published Online: 15 FEB 2010

DOI: 10.1002/9780470015902.a0001288.pub2



How to Cite

Passioura, J. B. 2010. Plant–Water Relations. eLS. .

Author Information

  1. CSIRO Plant Industry, Canberra, Australia

Publication History

  1. Published Online: 15 FEB 2010
Table 1. Some physico-chemical properties of water and aqueous solutions
PropertyValue and units
Cohesive strength>25 MPa
Surface tension0.073 N m−1 at 20°C
Viscosity0.0018 Pa s at 0°C
 0.0010 Pa s at 20°C
Diffusion coefficient of small solutes in water∼1×10−9 m2s−1
Molar volume (pure water at 20°C)1.81×10−5 m3 mol−1
Latent heat of evaporation at 20°C2.5 MJ kg−1
Latent heat of melting0.34 MJ kg−1
Saturated vapour pressure of pure water0.61 kPa at 0°C
 1.23 kPa at 10°C
 2.34 kPa at 20°C
 4.24 kPa at 30°C
 7.38 kPa at 40°C