Before 1951 only relative configurations of chiral molecules were known. Configurations of chiral molecules were related to each other through reactions of known stereochemistry. The standard compound was glyceraldehyde

An equimolar mixture of two enantiomers is called a racemic form (either a racemate or a racemic mixture). A racemic form shows no rotation of plane￾polarized light

该反应在全混流反应器中进行，反应温度为 20℃，液料的体积流量为0.5m3/h, CA0=96.5mol/m3, CB0=184mol/m3,催化剂 的浓度CD=6.63mol/m3。实验测得该反应的速 度方程为： rA=kCACD 式中k=1.15*10-3m3/(mol.ks)。若要求A的 转化率为40%，试求反应器的体积

第一节 化学工艺学研究范畴 第二节 化学工业的历史和作用 第三节 现代化工的特点和发展方向 第四节 化工生产过程及流程 第五节 有机化工的内涵 第六节 有机化工的原料及产品

该反应在全混流反应器中进行，反应温度为 20℃，液料的体积流量为0.5m3/h, CA0=96.5mol/m3, CB0=184mol/m3,催化剂 的浓度CD=6.63mol/m3。实验测得该反应的速 度方程为： rA=kCACD 式中k=1.15*10-3m3/(mol.ks)。若要求A的

该反应在全混流反应器中进行，反应温度为 20℃，液料的体积流量为0.5m3/h, CA0=96.5mol/m3, CB0=184mol/m3,催化剂 的浓度CD=6.63mol/m3。实验测得该反应的速 度方程为：

Isomers are different compounds that have the same molecular formula. Constitutional isomers are isomers that differ because their atoms are connected in a different order. Stereoisomers differ only in arrangement of their atoms in space.Stereoisomers are not constitutional isomers. Enantiomers are stereoisomers whose molecules are nonsuperposable mirror images of each other. Diastereomer are stereoisomers whose molecules are not mirror images of each other

7.3 芳香烃的化学性质 Reactions of Aromatic Hydrocarbons 7.4 苯环上亲电取代的定位规律 Orientation of Reactions on Substituted Aromatic Rings

1.12A The Structure of Methane sp3 Hybridization The 4 sp3 orbitals should be oriented at angles of 109.5° with respect to each other. An sp3-Hybridized carbon gives a tetrahedral structure for methane, and with four equivalent C—H bonds

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