Aspirin Preparation | Required Practical 10 | PAG 5 and 6 | Exam Question Walkthrough

This video is a full A Level Chemistry exam question walkthrough, taking you through the reasoning, mark earning points, and practical chemistry examiners expect. The walkthrough uses colour coded annotations, purple for exam marking points, and red and blue for the thinking out loud development, so you can clearly see what earns marks and what helps you understand the chemistry. This walkthrough is suitable for AQA, Edexcel and OCR, and fully relevant to Cambridge International AS and A Level Chemistry, Edexcel International A Level, IB Chemistry HL and SL, AP Chemistry, CBSE and ISC Class 12 Chemistry, Sri Lankan A Levels, African A Level systems, and Grade 12 Chemistry worldwide. 📄 Download the full exam question https://drive.google.com/file/d/1riy2lu1NaN2Y3cPfLKkLOGDHaNwbeDEx/view?usp=drive_link 📄 Links directory for all YouTube videos https://drive.google.com/file/d/1s3I5prjbJRR1U1lcKpXO9TQpQMaVoP66/view What this walkthrough covers: Equation for methanol reacting with 2 hydroxybenzenecarboxylic acid • Skeletal formula • Choosing between ethanoic anhydride and ethanoyl chloride • Name of the acylation mechanism • Role of phosphoric acid • Whether reflux is needed • Diagram for filtering an impure solid • Types of impurity • Recrystallisation method • Testing purity of a solid • How we know if a sample is impure • Mark earning wording vs supporting explanation • Links to AQA Required Practical 10 and OCR PAG 5 and 6 • How to structure answers for full marks Chapters 00:00 Intro and Socials 00:05 Equation for Methanol Reacting with 2 hydroxybenzenecarboxylic acid, skeletal formula 04:18 How to use this walkthrough 04:34 Ethanoic anhydride vs ethanoyl chloride, acylation mechanism name, phosphoric acid, reflux or not 08:42 Diagram for filtering impure solid, types of impurity 11:35 Recrystallisation method 16:18 Testing purity of a solid, how would we know it was impure How this was made This walkthrough was created using slide based explanations, with colour coded annotations to separate exam marking points from the thinking process. You can pause, rewatch, and build your own written answers from the structure shown. Connect with Us 📸 Instagram: @chemistrytutor123 🎵 TikTok: @chemistrytutor123 📧 Email: thechemistrytutor123@gmail.com Hashtags #ALevelChemistry #ChemistryRevision #ExamWalkthrough #InternationalAlevel #IBChemistry #APChemistry #CBSE #ISC #Grade12Chemistry #EdexcelIAL #CambridgeInternational #AQA #OCR #Edexcel