August 27, 2009

What is Chlorine Dioxide, Clo2?

Chlorine Dioxide is a chemical compound with the formula ClO2. This is a reddish - yellow or greenish - yellow gas or liquid (stabalized ). As a potent oxidising agent, it is very useful in water treatment and bleaching etc.
The molecule ClO2 is a paramagnetic radical due to odd numbers of valence electrons. In 1933 L.O. Brockway proposed a structure that involved a three-electron bond. This idea further evolved into a two resonance structure involving a double bond on one side and a single bond with three electrons bond on the other.
 
Properties
Molecular formula ClO2
Molar mass 67.45 g/mol
Appearance yellowish gas or liquid
Density 3.04 g/cm3
Melting point -59.5 °C
Boiling point 11 °C
Solubility in water 0.8 g/100 mL (20 °C)
Solubility soluble in alkalies, sulfuric acid
Acidity (pKa) 2.5-3.5
Source : wikipedia.org
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