• These can be sulfate,nitrate, ammonia,sodium chloride and if these are small particles they can be dangerous because if they are inhaled they can reach the lungs."

    VOA: standard.2010.04.16

  • This cation is attracting the chloride next to it and it is repelling the sodium as the next nearest neighbor.


    麻省理工公开课 - 固态化学导论课程节选

  • We talked about this reaction here where we had chloride ion in the gas phase plus sodium ion in the gas phase.


    麻省理工公开课 - 固态化学导论课程节选

  • So why don't you tell me what the formal charge should be on the sulfur atom of thionyl chloride?


    麻省理工公开课 - 化学原理课程节选

  • The ones that are most important in physiology are ones that only allow ions to go through: sodium, potassium, chloride, calcium, bicarbonate.


    耶鲁公开课 - 生物医学工程探索课程节选

  • We started with gaseous sodium to make gaseous sodium ion and gaseous atomic chlorine to make gaseous chloride ion through electron transfer.


    麻省理工公开课 - 固态化学导论课程节选

  • So now, let's get a sodium here, and the chloride ion next to it to the point where they are touching.


    麻省理工公开课 - 固态化学导论课程节选

  • And so what you're going to end up with is, well, let's go over that. Here is sodium and chloride.


    麻省理工公开课 - 固态化学导论课程节选

  • So just keep in mind when you do see the chlorine in these drugs, it's very different from the acid chloride.


    麻省理工公开课 - 化学原理课程节选

  • If you take one of those individual grains of sodium chloride, look at it carefully, you will see the edges look like this.


    麻省理工公开课 - 固态化学导论课程节选

  • And, we're going to look at what happens as the chloride ion moves from infinity in towards the positive ion.


    麻省理工公开课 - 固态化学导论课程节选

  • And then, if you go the real sodium chloride crystal and you do this same calculation but in three-dimensions.


    麻省理工公开课 - 固态化学导论课程节选

  • And I want that to react to give me sodium chloride as a solid and crystal.


    麻省理工公开课 - 固态化学导论课程节选

  • So, which atom would you expect to be in the center of a Lewis structure for thionyl chloride?


    麻省理工公开课 - 化学原理课程节选

  • And I know that sodium chloride forms because, if I look on the webpage at 3.091, you see this down here, this is sodium in kerosene.


    麻省理工公开课 - 固态化学导论课程节选

  • And what it's used is to convert one type of group, what's called a carboxylic acid into another type of very reactive intermediate, which is called an acid chloride.


    麻省理工公开课 - 化学原理课程节选

  • Magnesium chloride is the raw material for the production of magnesium.


    麻省理工公开课 - 固态化学导论课程节选

  • actually our third, but the second one we're going to talk about in terms of formal charge, which is thionyl chloride.


    麻省理工公开课 - 化学原理课程节选

  • So again, we should be able to check all of our formal charges and make sure they add up to 0, which they do, and that makes sense, because we have a neutral atom in terms of thionyl chloride.


    麻省理工公开课 - 化学原理课程节选

  • And so you can imagine that if you mix these, if you take sodium and you mix it with chlorine you get sodium chloride.


    麻省理工公开课 - 固态化学导论课程节选

  • Well, if we just take, for example, MgO, and let's try Mg, magnesium chloride just as an example.


    麻省理工公开课 - 固态化学导论课程节选

  • It still has positive charge, and there is nothing saying another chloride could not stick to it.


    麻省理工公开课 - 固态化学导论课程节选

  • Electrolysis of magnesium chloride in a cell where the one electrode we would make magnesium.


    麻省理工公开课 - 固态化学导论课程节选

  • And you will form a crystal of sodium chloride as a result of this need to form crystal expressed through the Coulomb's Law.


    麻省理工公开课 - 固态化学导论课程节选

  • I know table salt is white, but that is because you have power and you have multiple surfaces scattering, but a large crystal of sodium chloride is clear and colorless.


    麻省理工公开课 - 固态化学导论课程节选

  • A sodium chloride crystal is transparent to visible light.


    麻省理工公开课 - 固态化学导论课程节选

  • And there is this separation which is a balance of attractive forces because the chloride is net negative and the sodium is net positive, but both of them, regardless of net charge, have electrons.


    麻省理工公开课 - 固态化学导论课程节选

  • And the last example that we're going to talk about is thionyl chloride, so it's s o c l 2. This is another good step forward, because now we actually have four different atoms in our molecule.


    麻省理工公开课 - 化学原理课程节选

  • So I show that here, so in green, you have what's called a carboxcylic acid group, a c o o h, which gets converted by s o c l 2 to a c double bond o c l or an acid chloride.


    麻省理工公开课 - 化学原理课程节选

  • We see that we get a negative energy by attaching the chloride to the sodium.


    麻省理工公开课 - 固态化学导论课程节选


polyvinyl chloride (PVC) 聚氯乙烯

polyvinyl chloride (pvc) 聚氯乙烯

polyvinyl chloride n. 聚氯乙烯

sodium chloride 氯化钠,食盐

ammonium chloride [化]卤砂,氯化铵

vinyl chloride 氯乙烯;氯化乙烯

potassium chloride [化]氯化钾

calcium chloride 氯化钙

hydrogen chloride 氯化氢;氢氟酸

ferric chloride 氯化铁(用作蚀刻画腐蚀剂)

chloride ion [化]氯根离子

magnesium chloride 氯化镁

benzyl chloride [化]氯化苄;苄基氯

aluminum chloride 氯化铝

aluminium chloride n. 氯化铝

zinc chloride 氯化锌

barium chloride [化]氯化钡

thionyl chloride [化]亚硫酰氯

stannous chloride 氯化亚锡;[化]二氯化锡

choline chloride 氯化胆硷

- 来自原声例句

进来说说原因吧 确定

进来说说原因吧 确定