二氧化硫和三氧化硫精选教学PPT课件.ppt

1、第三节硫和氮的氧化物第三节硫和氮的氧化物第第1课时二氧化硫和三氧化硫课时二氧化硫和三氧化硫火山口火山口地壳的岩层地壳的岩层硫化物和硫酸盐硫化物和硫酸盐蛋白质蛋白质不不微微易易无无刺激性刺激性有有大大 易易易易上升上升易易变红色变红色酸性酸性变红变红褪色褪色恢复红色恢复红色漂白漂白H H2 2O OSOSO2 2H H2 2SOSO3 3 H H2 2O O 不稳定不稳定分解分解4 4 氧化氧化还原性还原性还原还原漂白漂白杀菌消毒杀菌消毒思维拓展2 2将将SOSO2 2通入加酚酞的通入加酚酞的NaOHNaOH溶液，红色褪去，体现了溶液，红色褪去，体现了 SOSO2 2的什么性质？如何证明？的什么

2、性质？如何证明？ 答案答案体现体现SOSO2 2的酸性。向反应混合物中滴加足量的的酸性。向反应混合物中滴加足量的 NaOHNaOH溶液，若恢复红色，则说明体现其酸性。溶液，若恢复红色，则说明体现其酸性。3 3将等物质的量的将等物质的量的ClCl2 2和和SOSO2 2混合，其漂白能力是否一定混合，其漂白能力是否一定 加强？加强？ 答案答案不是，不是，ClCl2 2和和SOSO2 2在水溶液中发生如下反应在水溶液中发生如下反应: :SOSO2 2 ClCl2 22 2H H2 2O O 2 2HClHClH H2 2SOSO4 4，使其失去漂白性。，使其失去漂白性。4 4能否用澄清石灰水鉴别能否

3、用澄清石灰水鉴别SOSO2 2和和COCO2 2？为什么？为什么？ 答案答案不能。不能。SOSO2 2、COCO2 2通入澄清石灰水中，均能使石通入澄清石灰水中，均能使石 灰水变浑浊，二者现象相同，不能区分开。灰水变浑浊，二者现象相同，不能区分开。 CaSOCaSO4 4 BaSOBaSO4 4H H2 2O O CABC答案答案B答案答案DD 好像是在一次电话采访中，一个记者曾经问过我一个很好玩的问题：李连杰，你这些年都是一帆风顺，你是怎么变得这么强大的呢？ 这位记者，采访我之前肯定没做过认真的准备。首先，我从来不是一帆风顺，我在朋友中有个外号，叫”死过一百次的生还者“。从小我父亲就过世了，

4、家境实在太差，只好加入武术队，靠每个月微薄的补贴养活全家；11岁开始我连续5次拿到全国武术比赛冠军，18岁拍了少林寺一夜成名，但立马，第二年我就摔断了腿，差点成为废人；好不容易等到黄飞鸿系列电影大卖，我的经纪人又遭黑道枪杀，事业再次陷入低谷.这些都不说，2004年印尼海啸时，我差点妻离子散命丧异地，当洪水就在你眼前肆虐时，那种内心的惊恐与不舍，又有多少人面对过呢？ 也可以理解，问这个问题的人估计从来都只是在电影中了解我，觉得我就是电影中那些硬汉，身怀绝技，从精神到肉体都是天生的强大事实上，我只是一个血肉做成的普通人，甚至，我比很多人还脆弱，有一段时间，我天天想着出家当和尚。 但是，少林寺的一位

5、高僧却不同意我这样做，因为出家并不能从根本上解决问题佛家还讲究入世修行呢！后来，我去好莱坞发展时，他要我记住一句话：一切困难都是为了帮自已变得更强大！ 这话听起来实在不像是什么祝福。果然，到了好莱坞，事情并不顺利，虽然台湾老板杨登魁花了上亿元帮我打造形象，创造机会，但傲慢的好莱坞并不肯接纳我这个身高才170CM的华人。我忍着，直到一次在片场，导演把剧本摔到我脸上，冷冷地问我：你是不是不懂英文，所以剧本没看懂？ 那个晚上，我打电话给那位高僧。他淡淡地说：这些年你吃了不少苦头，但回过头来想一想，是现在的你强大，还是过去的你强大？我一愣，想着自已这半生的经历，的确，那些困难现在看起来都不值一提了，可

6、当时，又何尝不是逼得自已无路可逃？可见，困难的确在让我变得强大，至少，让我的承受能力越来越强！ 从那以后，我不再惧怕任何困境，对困境内外甚至抱着一种“欢迎”的态度。朋友都说我疯魔了，但我心里知道，这不过是在困难中修炼自已。 拍摄英雄的那段时间，章子怡很是受非议，甚至在剧组中也被某些人孤立。在她身上我看到了刚出道的自已：冲动、爱憎分明，心里有什么脸上从来藏不住.于是，我把自的体验告诉她，慢慢地，她也从流言中脱胎换骨，开始表现出一个坚强的章小妹。 这两年，我对武术之道越来越有想法，很想和观众分享这种想法，于是，我请人编写了宣扬和平的电影西藏武僧在纽约。很多片商对名字很感兴趣，但一看剧本就都不肯投资

7、，因为里面的武打场面太少了，不够商业化。到哪里去找投资商？每晚这个问题都折磨得我无法入睡，实在没办法了，我找到法国的著名导演吕克贝松，想自掏腰包自已拍。拍完后，我看电影前90分钟十分精彩脱俗，但后30分钟就落入了武打片的俗套，就要求改结尾，别人都觉得我疯了，改结尾是自杀行为，会让票房一落千丈。吕克贝松也十分惊奇地问我：“你真想得罪你所有的观众吗？”我笑着说：“那就试一次吧。” 事实是，电影还没有公开放映，就受到了不少电影专家和媒体的关注，慢慢地，随着霍元甲的再度追击，大家也开始知道：哦，原来李连杰并不是一个武打机器，他也是有自已的想法的；中华武术除了实用外，里面还有博大精深的东西啊！ 这就是我

8、的目的。既要表达内心、又要保证票房，的确是一件太困难的事，但我知道，困境总会过去，而经历困境的人，却在这个过程中变得更乐观、更有力量。 s, some say she quoted every book of the bible by memory and iBoth sisters had had their love experience by the time the war came, and they were hurried home. Neither was ever in love with a young man unless he and she were verbally

9、 very near: that is unless they were profoundly interested, TALKING to one another. The amazing, the profound, the unbelievable thrill there was in passionately talking to some really clever young man by the hour, resuming day after day for months.this they had never realized till it happened! The p

10、aradisal promise: Thou shalt have men to talk to!-had never been uttered. It was fulfilled before they knew what a promise it was.And if after the roused intimacy39 of these vivid and soul-enlightened discussions the sex thing became more or less inevitable40, then let it. It marked the end of a cha

11、pter. It had a thrill of its own too: a queer vibrating thrill inside the body, a final spasm41 of self-assertion, like the last word, exciting, and very like the row of asterisks42 that can be put to show the end of a paragraph, and a break in the theme.When the girls came home for the summer holid

12、ays of 1913, when Hilda was twenty and Connie eighteen, their father could see plainly that they had had the love experience.Lamour avait poss par8 l, as somebody puts it. But he was a man of experience himself, and let life take its course. As for the mot a nervous invalid43 in the last few months

13、of her life, she wanted her girls to be free, and to fulfil themselves. She herself had never been able to be altogether herself: it had been denied her. Heaven knows why, for she was a woman who had her own income and her own way. She blamed her husband. But as a matter of fact, it was some old imp

14、ression of authority on her own mind or soul that she could not get rid of. It had nothing to do with Sir Malcolm, who left his nervously44 hostile, high-spirited wife to rule her own roost, while he went his own way.So the girls were free, and went back to Dresden, and their music, and the universi

15、ty and the young men. They loved their respective young men, and their respective young men loved them with all the passion of mental attraction. All the wonderful things the young men thought and expressed and wrote, they thought and expressed and wrote for the young women. Connies young man was mu

16、sical, Hildas was technical. But they simply lived for their young women. In their minds and their mental excitements, that is. Somewhere else they were a little rebuffed, though they did not know it.It was obvious in them too that love had gone through them: that is, the physical experience. It is

17、curious what a subtle but unmistakable transmutation it makes, both in the body of men and women: the woman more blooming, more subtly rounded, her young angularities softened45, and her expression either anxious or triumphant46: the man much quieter, more inward, the very shapes of his shoulders an

18、d his buttocks less assertive47, more hesitant.In the actual sex-thrill within the body, the sisters nearly succumbed48 to the strange male power. But quickly they recovered themselves, took the sex-thrill as a sensation, and remained free. Whereas the men, in gratitude49 to the woman for the sex ex

19、perience, let their souls go out to her. And afterwards looked rather as if they had lost a shilling and found sixpence. Connies man could be a bit sulky, and Hildas a bit jeering50. But that is how men are! Ungrateful and never satisfied. When you dont have them they hate you because you wont; and

20、when you do have them they hate you again, for some other reason. Or for no reason at all, except that they are discontented children, and cant be satisfied whatever they get, let a woman do what she may.However, came the war, Hilda and Connie were rushed home again after having been home already in

21、 May, to their mothers funeral. Before Christmas of 1914 both their German young men were dead: whereupon the sisters wept, and loved the young men passionately, but underneath51 forgot them. They didnt exist any more.Both sisters lived in their fathers, really their mothers, Kensington housemixed w

22、ith the young Cambridge group, the group that stood for freedom and flannel52 trousers, and flannel shirts open at the neck, and a well-bred sort of emotional anarchy53, and a whispering, murmuring sort of voice, and an ultra-sensitive sort of manner. Hilda, however, suddenly married a man ten years

23、 older than herself, an elder member of the same Cambridge group, a man with a fair amount of money, and a comfortable family job in the government: he also wrote philosophical essays. She lived with him in a smallish house in Westminster, and moved in that good sort of society of people in the gove

24、rnment who are not tip-toppers, but who are, or would be, the real intelligent power in the nation: people who know what theyre talking about, or talk as if they did.Connie did a mild form of war-work, and consorted54 with the flannel-trousers Cambridge intransigents, who gently mocked at everything

25、, so far. Her friend was a Clifford Chatterley, a young man of twenty-two, who had hurried home from Bonn, where he was studying the technicalities of coal-mining. He had previously55 spent two years at Cambridge. Now he had become a first lieutenant56 in a smart regiment57, so he could mock at ever

26、ything more becomingly in uniform.Clifford Chatterley was more upper-class than Connie. Connie was well-to-do intelligentsia, but he was aristocracy. Not the big sort, but still it. His father was a baronet, and his mother had been a viscounts daughter.But Clifford, while he was better bred than Con

27、nie, and more society, was in his own way more provincial and more timid. He was at his ease in the narrow great world, that is, landed aristocracy society, but he was shy and nervous of all that other big world which consists of the vast hordes58 of the middle and lower classes, and foreigners. If

28、the truth must be told, he was just a little bit frightened of middle-and lower-class humanity, and of foreigners not of his own class. He was, in some paralysing way, conscious of his own defencelessness, though he had all the defence of privilege. Which is curious, but a phenomenon of our day.Ther

29、efore the peculiar59 soft assurance of a girl like Constance Reid fascinated him. She was so much more mistress of herself in that outer world of chaos60 than he was master of himself.Nevertheless he too was a rebel: rebelling even against his class. Or perhaps rebel is too strong a word; far too st

30、rong. He was only caught in the general, popular recoil61 of the young against convention and against any sort of real authority. Fathers were ridiculous: his own obstinate62 one supremely so. And governments were ridiculous: our own wait-and-see sort especially so. And armies were ridiculous, and o

31、ld buffers63 of generals altogether, the red-faced Kitchener supremely. Even the war was ridiculous, though it did kill rather a lot of people.In fact everything was a little ridiculous, or very ridiculous: certainly everything connected with authority, whether it were in the army or the government

32、or the universities, was ridiculous to a degree. And as far as the governing class made any pretensions64 to govern, they were ridiculous too. Sir Geoffrey, Cliffords father, was intensely ridiculous, chopping down his trees, and weeding men out of his colliery to shove them into the war; and himsel

33、f being so safe and patriotic65; but, also, spending more money on his country than hed got.When Miss Chatterley-Emma-came down to London from the Midlands to do some nursing work, she was very witty66 in a quiet way about Sir Geoffrey and his determined67 patriotism68. Herbert, the elder brother an

34、d heir, laughed outright69, though it was his trees that were falling for trench70 props71. But Clifford only smiled a little uneasily. Everything was ridiculous, quite true. But when it came too close and oneself became ridiculous too.? At least people of a different class, like Connie, were earnes

35、t about something. They believed in something.They were rather earnest about the Tommies, and the threat of conscription, and the shortage of sugar and toffee for the children. In all these things, of course, the authorities were ridiculously at fault. But Clifford could not take it to heart. To him

36、 the authorities were ridiculous ab ovo, not because of toffee or Tommies.And the authorities felt ridiculous, and behaved in a rather ridiculous fashion, and it was all a mad hatters tea-party for a while. Till things developed over there, and Lloyd George came to save the situation over here. And

37、this surpassed even ridicule72, the flippant young laughed no more.In 1916 Herbert Chatterley was killed, so Clifford became heir. He was terrified even of this. His importance as son of Sir Geoffrey, and child of Wragby, was so ingrained in him, he could never escape it. And yet he knew that this t

38、oo, in the eyes of the vast seething73 world, was ridiculous. Now he was heir and responsible for Wragby. Was that not terrible? and also splendid and at the same time, perhaps, purely74 absurd?Sir Geoffrey would have none of the absurdity75. He was pale and tense, withdrawn76 into himself, and obst

39、inately77 determined to save his country and his own position, let it be Lloyd George or who it might. So cut off he was, so divorced from the England that was really England, so utterly78 incapable79, that he even thought well of Horatio Bottomley. Sir Geoffrey stood for England and Lloyd George as

40、 his forebears had stood for England and St George: and he never knew there was a difference. So Sir Geoffrey felled timber and stood for Lloyd George and England, England and Lloyd George.And he wanted Clifford to marry and produce an heir. Clifford felt his father was a hopeless anachronism. But w

41、herein was he himself any further ahead, except in a wincing80 sense of the ridiculousness of everything, and the paramount81 ridiculousness of his own position? For willy-nilly he took his baronetcy and Wragby with the last seriousness.The gay excitement had gone out of the war.dead. Too much death

42、 and horror. A man needed support arid comfort. A man needed to have an anchor in the safe world. A man needed a wife.The Chatterleys, two brothers and a sister, had lived curiously82 isolated83, shut in with one another at Wragby, in spite of all their connexions. A sense of isolation84 intensified

43、85 the family tie, a sense of the weakness of their position, a sense of defencelessness, in spite of, or because of, the title and the land. They were cut off from those industrial Midlands in which they passed their lives. And they were cut off from their own class by the brooding, obstinate, shut

44、-up nature of Sir Geoffrey, their father, whom they ridiculed86, but whom they were so sensitive about.The three had said they would all live together always. But now Herbert was dead, and Sir Geoffrey wanted Clifford to marry. Sir Geoffrey barely mentioned it: he spoke very little. But his silent,

45、brooding insistence87 that it should be so was hard for Clifford to bear up against.But Emma said No! She was ten years older than Clifford, and she felt his marrying would be a desertion and a betrayal of what the young ones of the family had stood for.Clifford married Connie, nevertheless, and had

46、 his months honeymoon with her. It was the terrible year 1917, and they were intimate as two people who stand together on a sinking ship. He had been virgin88 when he married: and the sex part did not mean much to him. They were so close, he and she, apart from that. And Connie exulted89 a little in

47、 this intimacy which was beyond sex, and beyond a mans satisfaction. Clifford anyhow was not just keen on his satisfaction, as so many men seemed to be. No, the intimacy was deeper, more personal than that. And sex was merely an accident, or an adjunct, one of the curious obsolete90, organic process

48、es which persisted in its own clumsiness, but was not really necessary. Though Connie did want children: if only to fortify91 her against her sister-in-law Emma.But early in 1918 Clifford was shipped home smashed, and there was no child. And Sir Geoffrey died of chagrin92.Ours is essentially a tragi

49、c age, so we refuse to take it tragically. The cataclysm has happened, we are among the ruins, we start to build up new little habitats, to have new little hopes. It is rather hard work: there is now no smooth road into the future: but we go round, or scramble over the obstacles. Weve got to live, no matter how many skies have fallen. This was more or less Constance Chatterleys position. The war had brought the roof down over her head. And she had realized that one must live and learn.t took a whole day and awhole night. What is certain is, at the end of it all, Darcus s