Sulfur dioxide can be further oxidized by oxygen to sulfur trioxide:
2 SO2 + O 2 → 2 SO3
Sulfur dioxide dissolves in water, forming sulfurous acid.
Becomes sulfurous acid when it dissolves in water, a corrosive liquid. Due to the gradual development of sulfuric acid, moist sulfur dioxide is extremely corrosive [Handling Chemicals Safely 1980, p. 876]. Containers may burst and discharge irritant poisonous sulfur dioxide or they may explode in the heat of a fire.
Acid Bis created when some byproducts of fuel combustion dissolve in rainwater. Acid rain and sulfur dioxide. Sulfur impurities can be found in a lot of fossil fuels. Sulfur in these fuels is oxidized during combustion to produce sulfur dioxide. After dissolving in raindrops of water, the sulfur dioxide becomes sulfuric acid.
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