iGCSE & O Level | Live Class 61 | Metals and The Reactivity 7 | Purification of Al₂O₃ | 0323 5094443

Book a FREE trial lesson by joining our Whatsapp Community https://chat.whatsapp.com/CWSRaMi4i3w... or connect on +923235094443 Visit our website for video courses and other resources: https://megalecture.com/courses/ iGCSE & O Level | Live Class 61 | Metals and The Reactivity 7 | Purification of Al₂O₃ | WhatsApp 0323 509 4443 Welcome to iGCSE & O Level Chemistry Live Class 61! In this session, we continue with Metals and The Reactivity Series (Part 7) and focus on the Purification of Aluminium Oxide (Al₂O₃) — a crucial step in the extraction of aluminium. This class explains the Bayer Process, the chemistry behind purification, and its importance before electrolysis in the Hall–Héroult process. 1️⃣ Introduction to Aluminium Extraction – Overview of aluminium production and why Al₂O₃ must be purified before electrolysis. 2️⃣ The Bayer Process – Step-by-step explanation of how bauxite (impure aluminium ore) is converted into pure aluminium oxide. 3️⃣ Reactions Involved – Chemical equations showing how sodium hydroxide dissolves aluminium oxide and impurities are removed. 4️⃣ Formation and Precipitation of Pure Al(OH)₃ – Detailed process of obtaining pure aluminium hydroxide and converting it back to Al₂O₃. 5️⃣ Industrial and Environmental Aspects – Discussion on energy use, waste management, and sustainability in aluminium purification. 6️⃣ Exam Practice & Past Paper Questions – Worked examples and marking tips for questions related to the Bayer Process and aluminium extraction. 📲 Get class notes, solved examples & recordings: WhatsApp: 0323 509 4443 🌐 Visit: www.megalecture.com #OLevelChemistry #iGCSEChemistry #ReactivitySeries #PurificationOfAl2O3 #BayerProcess #ExtractionOfAluminium #ChemistryLiveClass #MegaLecture