What is the volume in liters of SO2 gas needed to completely consume 1.40 kg of H2S if the density of SO2 is 2.279 kg per m3?

Answer 1

Though there is no common reaction known of how to 'consume' (whatever that may be: H2S and SO2 are both very toxic!) hydrogen sulfide, one might deduce the molar reaction ratio of H2S to SO2 from the 1 to 1 atomic sulfur content, this gives us equal amounts in moles H2S and SO2.

Since 1.40 kg H2S equals 1.40(kg) / 0.03418(kg/molH2S) = 40.96 mole H2S one can easily calculate that the same amount SO2 weights 40.96(molSO2) * 0.06407(kg/molSO2) = 2.62 kg SO2 which equals 2.62(kgSO2) / 2.279(kg/m3) = 1.15 m3 SO2 gas

Molar masses: 0.03418 kg/mol H2S and 0.06407 kg/mol SO2