Chemistry WCH13/01 January 2021 | Edexcel International AS Level Past Papers With Mark Scheme

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1. Ion identification–acid-base test, carbonate reaction with acid, silver/barium salt precipitate formation
2. Standard solution preparation–ethanedioic acid dilution, concentration calculation, titration with NaOH
3. Titration technique–apparatus rinsing, pipette usage errors, endpoint color change, titre accuracy
4. Thermal decomposition–Group 2 carbonate to oxide, CO₂ volume measurement, metal identification
5. Hess’s law application–enthalpy change via reaction with HCl, calorimetry data analysis
6. Halogenoalkane synthesis–reaction with HCl, separation and purification steps, yield and hydrolysis rate comparison

Edexcel International AS/A Level Chemistry (WCH) Jan 2021

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Classification: Unit 3

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Chemistry WCH13/01 January 2021 | Edexcel International AS Level Past Papers With Mark Scheme

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