42中講稿ppt-南京曉莊學(xué)院(專業(yè)版)
【正文】 m3 比較 超過 限度 Thanks for your ing ! Email: 演講完畢，謝謝觀看！ 。Chemistry Department Nanjing Xiaozhuang College Long Qi 南京曉莊學(xué)院化學(xué)系 龍琪 Finish the chemical euqation , please S + O2 ignite SO2 ? 點(diǎn)燃 Sulphur Dioxide What’s SO2 like ? Let’s observe a bottle of SO2 Let’s share the information and ideas 觀察 Physical properties Physical Properties ? State: ? Odour : ? Colour : ? Boiling point: ? Solubility: ? Density : gas irritant colorless /pungent /suffocating / faint sweetish / colorless liquid ( when T 100) 10oc, easy to liquefy soluble heavier than the air At room temperature VSO2:VH2O = 40:1 / times as heavy as air 狀態(tài) 氣味 沸點(diǎn) 溶解度 密度 物理性質(zhì) What chemical properties does SO2 have ? Let’s guess ! like CO2 , SO2 is an acidic oxide , then ? 2. Guess from the valence of S: 3. 4. +6 +4 0 SO2 Be oxided Be reduced Cl2, Br2, O2, KMnO4, HNO3 H2S SO2 + Br2 + 2H2O = + H2SO4 2HBr 酸性氧化物 化合價(jià) 被氧化 被
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