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第一章 流体流动 第二章 流体输送机械 第三章 传热 第四章 吸收 第五章 蒸馏 第六章 化学反应工程学基本原理
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Carbonyl compounds are a broad group of compounds that includes aldehydes, ketones,carboxylic acids, and esters
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Esters, like aldehydes and ketones, are weakly acidic. When an ester with an alpha hydrogen is treated with one equivalent of a base such as sodium ethoxide, a reversible condensation reaction occurs to yield a β−keto ester product. This reaction between two ester components is known as the Claisen condensation reaction
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第二章流体输送机械 第一节概述 流体输送机械为流体提供能量的机械。 泵—输送液体机械; 风机或压缩机一气体输送机械。 第二节离心泵 2—1离心泵的工作原理 1.工作原理:在离心力的作用下,高速流体在涡 形通道截面逐渐增大,动能转变为静压能,液体 获得较高的压力,进入压出管。 2.气缚现象:
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Carboxylic acids are just one member of a class of acyl derivatives, RCOY, where the acyl group is bonded to an electronegatives substituent -Y that can act as a leaving group in substitution reactions. Numerous acyl derivatives are possible, but we’ll be concerned only with four of the more common ones, in addition to carboxylic acids themselves: acid halides, acid anhydrides, esters, and amides
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The different arrangements of atoms caused by rotation about a single bond are called conformations (构象)of the molecule, and a specific conformation is called a conformer (构象异构体, conformation isomer). An analysis of the energy changes that a molecule undergoes as groups rotate about single bonds is called a conformational analysis (构象分析)
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Cycloalkanes with only one ring are named by attaching the prefix cyclo- to the names of the alkanes possessing the same number of carbon atoms
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The primary source of alkanes is petroleum Natural gas consists chiefly of methane, but ethane, propane, butane, and isobutane are also present. Petroleum is a complex mixture of hydrocarbons that must be refined into different fraction before it can be used
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Energy and the Relative Stability Kinetic energy is the energy an object has because of its motion. Potential energy is stored energy. It exists only when an attractive or repulsive force exists between objects
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