42中讲稿ppt南京晓庄学院.pptxVIP

;Finish the chemical euqation , please ;Sulphur Dioxide ;What’s SO2 like;;;;Physical Properties ;;;1、like CO2 , SO2 is an acidic oxide , then ? Guess from the valence of S: +6 +4 0 ;;二氧化硫与水的反应.zip Experiment 1 ;1. Reaction with water --- a property as an acidic oxide SO2 + H2O H2SO3 reversible reaction ;;;;;2.Reaction with oxygen --- a property as a reductant 2SO2+O2 2SO3 SO3 + H2O = H2SO4 The above reactions are used in the industrial production of H2SO4 ;;3.Bleaching Function decolorize the magenta solution , forming colorless and unstable compounds. The bleaching function is ;New straw hat ;;;;;Use your head ! ;;永久性漂白;;1. Reaction with water SO2 + H2O H2SO3 reversible reaction 2. Reaction with oxygen 2SO2+ O2 2SO3 3.Bleaching Function ;;; （1）装置③中加的固体药品是 _____，以验证混合气体中含有的 ____． 装置②中盛有的溶液是 ____， 以验证混合气体含有 ____．三种气体的验证顺序为 ____， ____， ____。 （2）连接上述装置以验证混合气体中含有CO2、SO2和水蒸气的顺序是 （填各仪器接口的代码字母）：（ ）接（ ）（ ）接（ ）（ ）接（ ）（ ）． （3）实验时装置①中Q瓶内的现象是 ______，结论是______． P瓶中的现象 ______， P瓶溶液的作用______． 若K瓶中的品红溶液不褪色，可得到的结论是______． ;;Uses of SO2;;The polluted cities ;;;;;;;;;;;CHINA , 1998;;;Use your head ; Compare with the following table, does the concentration of SO2 in the air around you excess （ ）the limitation? If it is , what can you do? ;;