SO2: sulfur dioxide
S + O2 --> SO2
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The chemical equation for sulphur dioxide is SO2, where one atom of sulfur is bonded to two atoms of oxygen. This compound is a colorless gas with a pungent odor, often produced by the combustion of sulfur-containing fossil fuels.
The chemical equation for the reaction between sulfur dioxide (SO2), bromine (Br2), and water (H2O) is: SO2 + Br2 + 2H2O -> H2SO4 + 2HBr
There is no equation for Sulfur, it is an element with the symbol S and that is all. Equations are used to represent chemical reactions and formulas are used to represent chemical compounds. Elements just have a symbol because they only contain one sort of atom.
The coefficient for sulfur dioxide in a balanced chemical equation will depend on the reaction it is involved in. To calculate the coefficient, you need to balance the chemical equation so that the number of atoms on both sides is equal. Once the equation is balanced, the coefficient for sulfur dioxide will be the number placed in front of its formula.
Sulfur oxide can refer to both sulfur dioxide (SO2) and sulfur trioxide (SO3). The word equation for sulfur dioxide is sulfur + oxygen → sulfur dioxide. The word equation for sulfur trioxide is sulfur + oxygen → sulfur trioxide.