| 1.A suitable indicator should be chosen, preferably one that will experience a change in color (an end point) close to the equivalence point of the reaction.译文： 应该选择合适的指示剂，最好是选择那种在反应终点会改变性质的物质。 | |
| | 2.In the International Union of Pure and Applied Chemistry (IUPAC) system of chemical nomenclature, the name of an alkene is derived from the name of the corresponding alkane by replacing the -ane alkane suffix with -ene and, if necessary, adding a prefix to indicate the location of the double bond in the molecule.译文：在国际理论和应用化学联合会化学命名法系统中，烯烃的名称来源于相应的烷烃，用-ene取代烷烃的后缀-ane，如果必要的话，添加一个前缀表示分子中双键的位置。 | |
| | 3.The equivalence point of the reaction, the point at which equivalent amounts of the reactants have reacted, will have a pH dependent on the relative strengths of the acid and base used.译文：反应的等当点，即为反应物等量反应的那一点，其pH值依赖于使用的酸和碱的相对强度。 | |
| | 4.Each of these compounds contains at least one ring that consists of six carbon atoms, each joined to at least two other carbon atoms, and each joined to adjacent carbon atoms by one single and one double bond.译文： 这些化合物中的每一个至少包含一个六个碳原子组成的环，每个碳原子连接着至少两个其他的碳 | |
| | 5.The elements are sometimes grouped according to their properties.译文： 元素有时可根据他们的性质成组。 | |
| | 6.Most people believed that natural processes were controlled by spirits, and they relied on magic to persuade the spirits to help while they conducted practical operations.译文：现在，大多数人认为自然过程可由人脑控制，并且在他们做物理操作时魔力可帮助他们说服大脑。 | |
| | 7.This is best achieved by washing a hanging drop from the tip of the burette into the flask right at the end of the titration to achieve a drop that is smaller in volume than what can usually be achieved by just dripping solution off the burette.译文：这一目标（指反应终点）可通过在滴定即将结束时，利用蒸馏水清洗悬挂于滴定管尖端的液滴并汇入烧瓶来实现，该液滴体积上要比通常从滴定管滴下的液滴小得多。 | |
| | 8.In organic chemistry, compounds composed of carbon and hydrogen are divided into two classes: aromatic compounds, which contain benzene rings or similar rings of atoms, and aliphatic compounds, which do not contain aromatic rings.译文：在有机化学中，由碳和氢组成的化合物可分为两大 | |
| 1.实验装置 | |
| | 2.脂肪酸 | |
| | 3.弱碱 | |
| | 4.atomic weight | |
| | 5.chemical symbol | |
| | 6.equivalence point | |
| | 7.碱式滴定管 | |
| | 8.酸碱指示剂 | |
| | 9.positively charged | |
| | 10.triple bonds | |
| | 11.Bunsen burner | |
| | 12.甲基橙 | |
| | 13.熔点 | |
| | 14.inert gas | |
| | 15. in the proper proportions | |
|
版权声明
声明：有的资源均来自网络转载，版权归原作者所有，如有侵犯到您的权益
请联系本站我们将配合处理！
