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Basically, sulfur dioxide is a acidic gas. As acid reacts with alkali, carbonates and metals, all 3 are actually ideal to remove sulfur dioxide. However, in the context of removing sulfur dioxide due to air pollution, reacting sulfur dioxide with alkali and carbonate would be more appropriate. For example, removing sulfur dioxide with calcium carbonate would result in calcium sulfate, water and carbon dioxide.
calcium oxide is injected into the final stage of the scubber, wich then reacts with the sulfur dioxide to form calcium sulfite.
It combines with it in the following reaction: SO2 + Ca(OH)2 --> CaSO3 + H2O
Sulfur dioxide can be removed from a gas phase by making use of the reaction SO2 + CaO = CaSO3.
Automobile exhaust
It is part of the exhaust system. It can be anywhere between the exhaust manifold and the muffler. It is usually half way between the manifold and the muffler. Some cars have two. The purpose of the converter is to change the carbon monoxide in the exhaust to sulfur dioxide. Carbon monoxide is a greenhouse gas and sulfur dioxide is not.
chromatography
Catalistic converter??
If it is bonded to a metal, then it is a polyatomic ion, sulfite If it is alone, then it is sulfur dioxide
SO2 (g) + CaO (s) ----> CaSO3
hydrocarbons (unburned) carbon monoxide carbon dioxide nitrogen oxides sulfur dioxide phosphorus lead and other metals
CaO+SO2+H2O-->CaSO3+H2O