9 . Sulfur dioxide and bromine and water react to form hydrogen bromide and sulfuric acid -LRB- H2SO4 -RRB- . SO2 + Br2 +2 H2O → HBr +2 H2SO4 S2O +2 Br +2 H2O → 2HBr + H2SO4 SO2 + Br2 + H2O → HBr +2 H2SO4 SO2 + Br2 +2 H2O → 2HBr + H2SO4 ?
Is SO2 a Lewis acid or base ?