点击切换搜索课件文库搜索结果(378)
文档格式:PPT 文档大小:686.5KB 文档页数:38
The important of acid-base reaction: 1. is a simple, fundamental reaction. 2. enable you to see the mechanism of the reaction 3. illustrate the process of bond breaking and bond making 4. examine important ideas about the relationship between the structure of molecules and their reactivity
文档格式:DOC 文档大小:252.5KB 文档页数:20
教学目标或要求:了解醛和酮的分类,命名及同分异构现象。了解醛酮亲核加成反应历程及其制备方法。重点掌握亲核加成反应的反应历程
文档格式:PPT 文档大小:1.4MB 文档页数:83
Chapter 6 Ionic Reactions--- Nucleophilic substitution and elimination reactions of alkylhalides (卤代烃的亲核取代反 Because halogen atoms are more electronegative 应和消除反应) than carbon, the carbon-halogen bond of alkyl halides is polarized; the carbon atom bears a partial positive charge, the halogen atom a partial negative charge
文档格式:PPT 文档大小:1.05MB 文档页数:54
18.1 Introduction The carboxyl group, -COOH, -CO2H, is one of the most widely occurring functional groups in chemistry and biochemistry. Not only are carboxylic acids themselves important, but the carboxyl group is the parent group of a large family of related compounds
文档格式:PDF 文档大小:65.09KB 文档页数:5
Flash column chromatography is a quick and (usually) easy way to separate complex mixtures of compounds. We will be performing relatively large scale separations in 5.301,around 1.0 g of compound. Columns are often smaller in scale than this and some of you will experience these once you move into the research lab. Column chromatography uses the same principles
文档格式:DOC 文档大小:19KB 文档页数:1
将液体从固体中分开来的最简易方法是什么?过滤在此影片中 将学习如何有效的用重力过露及真空过滤来进行。 The easiest way to separate a liquid from a solid? Filtration! Learn how to effectively carry out gravity and vacuum filtrations in this video
文档格式:DOC 文档大小:19KB 文档页数:1
薄层分析法在许多研究实业室是最常用的此影片将带领你每 步骤,从准备跑瓶到计算RF(retention factor)值 步骤, Thin-layer chromatography is the most commonly used analytical technique in many research labs. This video walks you through every step from setting up a developing chamber to calculating Rf values
文档格式:PDF 文档大小:84.68KB 文档页数:4
WARNING NOTICE: The erperimants descnbed in these materials are potentially hao ardous and require a high level ofsafcty training special facilitics and equipment, and supervision by approprinte individuals. You bear the solc responsibility, liability, and risak for the implemcntation of such safdty procedunes and measures. MrT shall have no responsiblity, liability, risk for the content or implemcutation of amy of the matcrial presented. Legal Notices
文档格式:DOC 文档大小:19KB 文档页数:1
从固态到气态,然后直接回到固态。此纯化技巧既漂亮又实用 的。找出此影片中为什么用大气压力来升华二茂铁(Ferrocene) From solid to gas, and then straight back to solid. This purification technique is both beautiful and useful. Find out why by watching the atmospheric pressure sublimation of ferrocene in this video
文档格式:DOC 文档大小:19KB 文档页数:1
萃取、冲洗和干燥:还没到结束不能算结束。藉由分液漏斗示 。 范液相-液相萃取并学习如何用”反应检查步骤”检查你的反应。这 是一个你不会想错失的一个纯化技巧! Extracting, Washing and Drying: It ain't over 'til it's over. Learn how to \work up\ your reaction using a separatory funnel to perform a liquid-liquid extraction. This is one purification technique you don't want to miss!
首页上页3132333435363738下页末页
热门关键字
搜索一下,找到相关课件或文库资源 378 个  
©2008-现在 cucdc.com 高等教育资讯网 版权所有