迷迭香酸中文名:迷迭香酸CAS:20283-92-5中文别名:酪萨维;迭香酸;肉桂醇甙;罗丹酚酸;迷迭香酸;迷迭香酸/酪萨维;迷迭香酸(标准品);迷迭香酸,来源于迷迭香英文名:Rosmarinic acid性质:熔点;171-175℃(lit.) 密度;1.33 储存条件;Store at RT 溶解度;H2O: soluble1mg/mL, clear, colorless 颜色 white to faintly...
1化学的base and acid的几道题,1.A table wine has a pH of 3.40.What is the hydronium ion concentration of thewine?2.A 2.5 x 10-3 M solution of an acid HA has a pH of 3.80 at 25°C.What is thehydronium ion concentration of the solution?Calculate Ka for the acid.3.The ionisation...
1077-28-7(CAS DataBase Reference) NIST化学物质信息: Dl-thioctic acid(1077-28-7) 安全信息 危险品标志:Xn 危险类别码:22-20/21/22 安全说明:37/39-26-24/25-36-36/37/39 WGK Germany:3 RTECS号:JP1192000 海关编码:29349990 毒害物质数据:1077-28-7(Hazardous Substances Data) ...
The mixture is acidic because citric acid has a low pKa, its first pKa is 3.1, so an equal mixture of acid and conjugate base has a pH = 3.1. Typically lemonade has a pH between 2 and 3, indicating that it is a highly acidic substance.LEMONADE ...
The more limited and older definition was that a base is a substance that dissolves in water and dissociates into a hydroxide or OH-ion and a positive ion. In the more general definition, a base is a substance that when dissolved in water increases the number of hydroxide ions. This defin...
英文名称:α-LipoicAcid CAS:1077-28-7 纯度:99 包装信息:25kg/RMB 400;1kg100kg a-硫辛酸价格 1月5日 a-硫辛酸最新价格1月5日 a-硫辛酸厂家最新报价:58000元/吨。2025/1/6 8:34:35 12月31日 a-硫辛酸最新价格12月31日 a-硫辛酸厂家最新报价:58000元/吨。2025/1/1 8:35:20 ...
百度试题 题目碱基的英文名称是()。 A. Ribose B. PhosphoricAcid C. Base D. Nucleicacid 相关知识点: 试题来源: 解析 C.Base 反馈 收藏
If it acts as a Bronsted-Lowry acid, the water molecule would donate a proton ((H+), also written as a hydronium ion (H3O+). If it acts as a Bronsted-Lowry base, it would accept a proton (H+). An acid hydrolysis reaction is very much the same as an acid dissociation reaction. ...
路易斯酸碱理论(Lewis Acid-Base Theory)由美国化学家吉尔伯特·路易斯(Gilbert N. Lewis)于1923年提出,是一种更广义的酸碱概念,超越了水溶液体系。该理论基于电子对的相互作用来定义酸和碱,适用于更多类型的化学反应。 路易斯酸:能够接受一对电子的...
What is the product of acid-base neutralization reaction? A. Acid and base B. Water and salt C. Only water D. Only salt 相关知识点: 试题来源: 解析 B。中文解析:酸碱中和反应的产物是水和盐,文章中明确提到“When an acid and a base react, they form water and a salt.”。 反馈 收藏 ...