• What was neat about it is before that time, the predominant species to use for air conditioning or refrigeration was ammonia.

    在这之前是很整洁的,之前最主要的用于空调或者冰箱的,物质是氨。

    麻省理工公开课 - 固态化学导论课程节选

  • And, not too many people, actually, if you talk to your grandmother or grandfather, there were some refrigerators that were actually made that used ammonia.

    但是,并非太多的人,如果你会对你的祖父,祖母谈谈,或许有一些冰箱,实际上是用氨。

    麻省理工公开课 - 固态化学导论课程节选

  • Let's just take hydrogen and nitrogen in the gas phase and form ammonia.

    我们利用氢气和氮气,合成氨。

    麻省理工公开课 - 热力学与动力学课程节选

  • So what we see is on ammonia here, 107 we know that it's less than a 109 . 5, it's actually 107, so it's less than a 109 . 5, because of that lone pair pushing down in the bonding electrons.

    我们看到在氨分子里,我们知道它比109.5要小,它是,所以比109。5要小,因为孤对会把成键电子向下推。

    麻省理工公开课 - 化学原理课程节选

  • And what is the shape, for one more clicker question on ammonia?

    那它的形状呢?,再来一道关于氨分子的课堂习题?

    麻省理工公开课 - 化学原理课程节选

  • He invented ammonia synthesis with catalysis by iron.

    它发现了铁催化合成氨的催化反应。

    麻省理工公开课 - 固态化学导论课程节选

  • So we can have our two hydrogen atoms come in here, and what we will find is - now that we have all of our orbitals filled up -- so thinking about what this angle is here, would you expect it to be less than or greater than what we saw for ammonia before?

    我们在这里有两个氢原子,我们会发现,现在我们所有的轨道都填满了-,考虑一下这里的角度,你们觉得它比在氨中看到的,要大还是要小?

    麻省理工公开课 - 化学原理课程节选

  • So if we do this and we form the molecule ammonia, let's switch to a clicker question, and have you tell me what the bond angle - is going to be in ammonia -- HNH Actually, let me draw it on the board as you look -- actually, can you put the class notes on, since you don't actually have your notes to refer to.

    如果这样做的话,我们就可以形成氨分子,让我们来做一个课堂练习,你们告诉我氨分子中的键角是多少-,键角,the,h,n,h,bond,angle。,实际上让我在黑板上画出它来,这样你们可以看到实际上-,你能把课堂讲义放出来吗,因为你们没有讲义可以参考。

    麻省理工公开课 - 化学原理课程节选

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