sulfur dioxide

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1、SulfurdioxideGasatroomtemperatureandpresureColorlessIrritantsmell刺激性气味PoisonousEasytoliquefy液化(itsb.p.is-10degree)DissolveinwaterEndPhysicalpropertiesExperimentAtest-tubefullofSO2isinvertedinaglasswaterthroughwithpurplelitmus(紫色石蕊).ObservewhatHappens

2、.purplelitmusSO2Phenomenon:Thewaterlevelintest-tuberises,andtheliquidturnsred.ThereactionofSO2dissolvinginwaterisareversiblereaction。SO2+H2OH2SO32SO2+O22SO3catalystSO3+H2O=H2SO4Thebleachingfunctionofsulfurdioxide二氧化硫的漂白作用.TheredflowerturnswhiteENDExe

3、rciseSulfurdioxideisaandgaswithanirritantsmell.SO2dissolveinwatertoformsulfurousacid.ThechemicalequationiscolorlesspoisonousSO2+H2O=H2SO3isthemainreasonforacidrain.SulphurdioxideIthasthefuntion.bleachingThankyouforlistening!