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A-LevelChemistryChemical energeticsMay/June 2025Paper 3 Q212 Marks

You will determine the enthalpy change for the reaction of aqueous citric acid with aqueous sodium hydroxide to form aqueous sodium citrate. The procedure involves two experiments using solid citric acid. FB 4 is citric acid, C6H8O7. Use this for Experiment 1. FB 5 is citric acid, C6H8O7. Use this for Experiment 2. FB 6 is 2.00 mol dm⁻³ sodium hydroxide, NaOH.

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About This A-Level Chemistry Question

This structured question appeared in the Cambridge A-Level Chemistry (9701) May/June 2025 examination, Paper 3 Variant 2. It tests the topic of Chemical energetics and is worth 12 marks.

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