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Exothermic Reaction (174/505)
SULFUR BURNING IN AIR (2 of 3)
Lump Sulfur In Deflagration Spoon
Orthorhombic lump sulfur ignites in air above 261 degC with a blue flame to form sulfur dioxide gas (SO2). SO2 is slowly oxidized in the atmosphere to form SO3 which dissolves in rainwater to give sulfuric acid or acid rain.
Copyright:© 1994 Richard Megna - Fundamental Photographs
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