alkali
简明释义
n. 碱；可溶性无机盐
adj. 碱性的
n. （Alkali）人名；（冈、乍、尼日利）阿尔卡利
复 数 a l k a l i s 或 a l k a l i e s
英英释义
A soluble hydroxide of an alkali metal or alkaline earth metal, typically having a pH greater than 7. | 一种可溶的氢氧化物，通常是碱金属或碱土金属，pH值大于7。 |
任何在水中溶解形成氢氧根离子的碱。 |
单词用法
抗碱性，耐碱性；耐碱坚牢度 | |
[化]碱金属；[医]硷金属 |
同义词
| 碱 | Sodium hydroxide is a strong base used in various industrial processes. | 氢氧化钠是一种用于各种工业过程的强碱。 | |
| 碱性物质 | 碱性物质可以中和酸。 | ||
| 苏打 | 苛性钠通常用于肥皂制造。 | ||
| 苛性钠 | 小苏打是一种温和的碱，可以用于烹饪。 |
反义词
| 酸 | 该溶液对实验来说太酸了。 | ||
| 中性 | 水在pH值上被认为是中性的。 |
例句
1.The extremely salty, alkali lake holds little life, but its waters are a favorite spot for wading birds.
其味极咸，碱湖保存了湖中的小生命，但其水域仍为涉水鸟所喜欢的地方。
2.The influences of curing temperature and alkali contents of cement on expansion of mortar bars are investigated.
研究了养护温度和水泥碱含量（质量分数，下同）与硅质集料砂浆试样膨胀的关系。
3.Also there are many ancient trees, which would have been damaged by the alkali from the cement. We have had to install a special irrigation system.
还有，这里有许多古树，水泥的碱会损坏这些它们，我们不得不安装一个特殊的灌溉系统。
4.The device includes sliver feeding device, alkali impregnating device, mercerizing device, rinsing and drying device.
该装置包括棉条喂入装置、碱液浸渍装置、丝光装置、水洗和烘干装置。
5.PC board ban and wet cement appearance and acid, alkali touch information appearance.
P C板禁令和湿水泥外表和酸，碱性资料外表触摸。
6.People had sufficient cognition to alkali that is in cement-concrete and its harm.
对水泥混凝土中存在的碱及其危害人们已经有了较充分的认识。
7.Also there are many ancient trees, which would have been damaged by the alkali from the cement. We have had to install a special irrigation system.
还有，这里有许多古树，水泥的碱会损坏这些它们，我们不得不安装一个特殊的灌溉系统。
8.Anticorrosion: the material for polymer, can completely prevent acid and alkali salt of erosion.
防腐：本物质为高分子聚合物，能彻底防止酸碱盐的侵蚀。
9.The soap is made using a strong alkali 碱 like sodium hydroxide.
这块肥皂是用强碱 碱如氢氧化钠制作的。
10.Sodium bicarbonate is a common household alkali 碱 used in baking.
碳酸氢钠是家用的常见碱 碱，用于烘焙。
11.Lime is often used as an alkali 碱 to improve soil pH levels.
石灰通常作为碱 碱来改善土壤的pH值。
12.In chemistry class, we learned that an alkali 碱 can neutralize an acid.
在化学课上，我们学习到碱 碱可以中和酸。
13.When an alkali 碱 reacts with an acid, it produces salt and water.
当碱 碱与酸反应时，会产生盐和水。
作文
Alkalis play a crucial role in various chemical processes and are essential in many industries. An alkali (碱) is a type of base that dissolves in water, producing hydroxide ions (OH-). This property makes alkalis (碱) vital for numerous applications, from manufacturing to environmental science. In everyday life, we encounter alkalis (碱) in products such as soap and cleaning agents, which utilize their ability to neutralize acids and break down organic materials.In the context of chemistry, alkalis (碱) are typically derived from alkali metals, such as sodium and potassium. These elements react vigorously with water, releasing hydrogen gas and forming strong alkaline solutions. For example, when sodium hydroxide (NaOH), commonly known as lye, is dissolved in water, it produces a highly caustic solution that can be used for cleaning and unclogging drains. The pH of such solutions can reach levels above 13, indicating their strong basicity.The significance of alkalis (碱) extends beyond household use; they are also pivotal in industrial processes. In the manufacturing of glass, for instance, alkalis (碱) are added to silica to lower the melting point, making the production process more energy-efficient. Similarly, in the paper industry, alkalis (碱) are employed in the pulping process to break down lignin, allowing for the extraction of cellulose fibers needed for paper production.Moreover, alkalis (碱) have important applications in agriculture. They can be used to adjust soil pH, promoting optimal conditions for crop growth. Soils that are too acidic can hinder plant development, and the addition of alkalis (碱) can help neutralize this acidity, ultimately improving yield.However, the use of alkalis (碱) must be approached with caution. Their strong basic nature means that they can cause severe burns if they come into contact with skin or eyes. Therefore, safety measures should always be observed when handling these substances. Additionally, excessive use of alkalis (碱) in agriculture can lead to soil degradation, negatively impacting the environment.In conclusion, alkalis (碱) are fundamental to both our daily lives and various industrial processes. Their ability to neutralize acids, facilitate chemical reactions, and improve agricultural practices showcases their versatility and importance. As we continue to explore the uses of alkalis (碱), it is essential to balance their benefits with responsible handling and environmental considerations. Understanding the properties and applications of alkalis (碱) allows us to harness their potential while minimizing risks associated with their use.
