A-Level Chemistry Specification

OCR A H432

Section 2.1.4: Acids

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#2.1.4a

the formulae of the common acids (HCl, H2SO4, HNO3 and CH3COOH) and the common alkalis (NaOH, KOH and NH3) and explanation that acids release H+ ions in aqueous solution and alkalis release OH– ions in aqueous solution

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#2.1.4b

qualitative explanation of strong and weak acids in terms of relative dissociations

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#2.1.4c

neutralisation as the reaction of:

(i) H+ and OH– to form H2O
(ii) acids with bases, including carbonates, metal oxides and alkalis (water-soluble bases), to form salts, including full equations

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#2.1.4d

the techniques and procedures used when preparing a standard solution of required concentration and carrying out acid–base titrations

PAG2

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#2.1.4e

structured and non-structured titration calculations, based on experimental results of familiar and non-familiar acids and bases.

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