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Title: GCSE Chemistry 2.2 - Acids and Bases
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.
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Neutralisation
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exothermic
H+(aq) + OH-(aq) → H2O(l)
The reactions of strong and weak acids
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Weak acids react with metals, bases and carbonates in the same way as strong acids,
but the reactions occur more slowly and are less exothermic
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The reactions of acids with bases
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always produce a metal salt and water
The reactions of acids with carbonates
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produce carbon dioxide gas, a salt and water
Effervescence is observed
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SO42- + Ba2+ → BaSO4
The preparations of a soluble salt from an insoluble base or carbonate
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1
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3
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Allowing the filtered solution to evaporate slowly over a period of days results in the
formation of larger crystals
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The silver halides and barium sulfate are insoluble
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2
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Title: GCSE Chemistry 2.2 - Acids and Bases
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.
Description: These are concise, exam-focused notes made using the WJEC specification and BBC Bitesize. (I achieved an A*.) This is one of six topics in the unit.