A. products to reactants. B. reactants to products. C. catalysts to reactants. D. products to catalysts. 相关知识点: 试题来源: 解析 B。解析:在化学反应方程式中,箭头是从反应物指向产物。选项 A 方向错误。选项 C 和 D 催化剂不是反应的主要物质,箭头不指向它们。反馈 收藏 ...
箭头推或电子推是描述有机化学反应机理的技术，它是由鲁滨孙罗伯特爵士首次开发的，在使用箭头推动时，“弯曲箭头”或“卷曲箭头”是在化学反应过程中的结构公式叠加，以显示反应机理。箭头说明电子的运动是债券betweenatoms破裂和形成。箭推也用来描述正负电荷分布在有机moleculesthrough共振。然而要记住，重要...
In a chemical equation, the arrow means ___. A. 路满现代去该即观引在委平院美习将行路满现代去该即观引在委平院美习将行equal路满现代去该即观引在委平院美习将行路满现代去该即观引在委平院美习将行 B. 劳高维部劳高维部not equal劳高维部劳高维部 C. 国边状为件她使位参形场许圆业化国...
Balance the following reaction:Br2(aq)+Ti2+(aq)→Ti3+(aq)+Br−(aq) Balanced Chemical Reactions: The balanced chemical reaction would consider different factors for its correct expression. We would need to first identify the correct reactants and products. Moreover, ...
A New „Bottom-Up" Framework for Teaching Chemical Bonding. J. Chem. Educ. 85, 1680 - 1685.Levy DE (2008) Arrow-pushing in organic chemistry: an easy approach to understanding reaction mechanisms. John Wiley and Sons, Hoboken, New Jersey, USA...
In organic chemistry, we often need methods to follow what is happening in a reaction. Arrow pushing is one of those methods, and we will learn...
After balancing, the coefficient y in the following chemical reaction is equal to: Al_2O_3 + y C to Al (l) + y CO_2 (g) a. 1. b. 2. c. 3. d. 4. Balance the following equation: NH4NO2 arrow N2 + H2O Balance the equation: Al (s) + HCl (aq) to AlCl_3 (aq...
Main-Group ElementsMechanisms of ReactionsIn a recent article by the authors, the suggestion was made that arrow pushing, a widely used tool in organic ... S Berg,A Ghosh - 《Journal of Chemical Education》 被引量: 2发表: 2013年 Pushing the Boundaries for Evidenced-Based Practice: Can Onli...
Equilibrium constants were calculated from the two Arrhenius expressions in the overlapping temperature range, and good agreement was obtained with the literature values. The rate constants for reaction 2 were converted into rate constants for reaction 1 using literature equilibrium constants. These data...
A chemical equation represents a chemical reaction and shows the reactants and products. The reactants are written to the left and the products are written to the right of an arrow pointing towards the products. From the nature of the reactants involved in the reaction, we can predict the...