Diagram shows that a catalyst increases the rate of a reaction by providing an alternative pathway which has a lower activation energy
Edexcel IGCSE Chemistry 复习笔记 3.2.4 Activation Energy
Edexcel IGCSE Chemistry 复习笔记 3.2.4 Activation Energy
Reaction Profiles
Reaction Profiles Showing ∆H and EA
- Catalysts provide the reactants another pathway which has a lower activation energy
- By lowering Ea, a greater proportion of molecules in the reaction mixture have sufficient energy for an effective collision
- As a result of this, the rate of the catalysed reaction is increased compared to the uncatalyzed reaction
Exam Tip
The activation energy is constant for a particular reaction. Reactions with a low activation energy occur readily as little energy is needed to break the bonds and initiate the reaction.
转载自savemyexams
以上就是关于【Edexcel IGCSE Chemistry 复习笔记 3.2.4 Activation Energy】的解答，如需了解学校/赛事/课程动态，可至翰林教育官网获取更多信息。
往期文章阅读推荐：
翰林独家 | 经济学竞赛核心精讲，一册打通NEC/IEO/USAEBO！
IGCSE全A*，A-Level阶段却崩了？别忽视IGCSE选课的重要性！
翰林AMC8视频课重磅上线！
国际竞赛真题资源免费领取
