Give a balanced equation When sulphur changes to sulphuric acid
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The gas is then washed with water and dried with sulfuric acid. To conserve energy, the mixture is heated by exhaust gases from the catalytic converter by heat exchangers. Sulfur dioxide and dioxygen then react as follows: 2 SO2(g) + O2(g) ⇌ 2 SO3(g) : ΔH = -197 kJ·mol.
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