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 復習筆記 3.2.4 Activation Energy
Edexcel IGCSE Chemistry 復習筆記 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.
轉(zhuǎn)載自savemyexams
以上就是關(guān)于【Edexcel IGCSE Chemistry 復習筆記 3.2.4 Activation Energy】的解答，如需了解學校/賽事/課程動態(tài)，可至翰林教育官網(wǎng)獲取更多信息。
往期文章閱讀推薦：
翰林獨家 | 經(jīng)濟學競賽核心精講，一冊打通NEC/IEO/USAEBO！
IGCSE全A*，A-Level階段卻崩了？別忽視IGCSE選課的重要性！
翰林AMC8視頻課重磅上線！
國際競賽真題資源免費領(lǐng)取
