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Properties of Water
- Pure water is transparent, tasteless, colourless and odourless. It readily picks up the flavour of any substance dissolved in it. Water in thick layers appears greenish blue.
- Due to the presence of intermolecular hydrogen bonding in H2O molecules, the freezing point, boiling point, heat of fusion and heat of vaporization of water are higher when compared to the other hydrides members of the oxygen group. Group16 members such as H2S, H2Se, H2Te etc. do not show hydrogen bonding.
- Water has a high dipole moment (m = 1.84 D). So, water is an ideal medium for the dissolution of a vide variety of compounds.
- High specific heat of water enables it to absorb heat of various biochemical and physiological reactions, going on inside the body, with the minimum rise of temperature.
- Water is a poor conductor of heat and electricity. However, addition of a small quantity of an acid or alkali makes it conducting.
