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This video is intended to be an ultimate guide and revision on EVERY organic chemistry curly arrow mechanism you need to know for your A Level chemistry exams under the AQA specification, helping you revise and prepare for your paper 2 and 3 exams. 🔍 In this video, we cover: 00:00 - Intro and breakdown of video 00:25 - Nucleophilic substitution of halogenoalkanes (haloalkanes) 10:22 - Elimination of halogenoalkanes 13:25 - Electrophilic addition of alkenes 21:59 - Acid catalysed hydration of ethene 24:15 - Acid catalysed elimination of alcohols 26:29 - Nucleophilic addition of ketones and aldehydes 30:58 - Nucleophilic addition-elimination of acyl chlorides 36:57 - Electrophilic substitution of benzene (nitration and Friedel-Crafts acylation) PLEASE NOTE: I did NOT include the free radical substitution mechanism of alkanes because it does not involve curly arrows - so ensure you learn the initiation, propagation, and termination step equations for this as it's in the spec! ✅ If you want to improve your grades and see more content like this - smash the like button and subscribe to the channel! 📈 📖 Huge shoutout to the resources used to make this video: https://chemrevise.org https://www.chemguide.co.uk/index.htm... 📚 Although this tutorial focuses on AQA, the concepts covered here are also applicable to other exam boards, such as OCR and Edexcel