SO3 dissolves in water to form H2SO4, SO2 to form H2SO3. give reason. please reply asap! Share with your friends Share 0 Yasodharan answered this Dear Student, The combustion of S in oxygen gives main product of SO2 and slightly fuming (or) cloudy byproduct of SO3 , when dissolving in water their oxygen presence plays a vital role in the formation of acidic compound as below,S + O2 → SO2 {sulphur dioxide}SO2 + H2O → H2SO3 {sulphurous acid}2S + 3O2 →2SO3SO3+H2O →H2SO4 {sulphuric acid}The excess oxygen reaction in sulphur combustion plays a vital role in two different product formation. Regards. 0 View Full Answer
