Acid-base titration

• Resources Structure
• Key Stage 4
• Chemistry
• VII. Acids, bases and salts
• 39. Acid-base titration

• Exam Specifications
• Key Stage 4
• AQA GCSE Science A (4461) Chemistry
• III. Additional materials
• 1. Additional materials
• Additional materials
• AQA GCSE Additional Science (4463) Chemistry
• I. Chemistry 2
• 6. How can we use ions in solutions?
• In neutralisation reactions, hydrogen ions react with hydroxide ions to produce water. This reaction can be represented by the equation: H+ (aq) + OH-(aq) -› H2O(l).
• AQA GCSE Chemistry (4421)
• II. Chemistry 2
• 21. How can we use ions in solutions?
• In neutralisation reactions, hydrogen ions react with hydroxide ions to produce water. This reaction can be represented by the equation: H+(aq) + OH– (aq) → H2O(l).
• III. Chemistry 3
• 23. What are strong and weak acids and alkalis? How can we find the amounts of acids and alkalis in solutions?
• If the concentration of one of the reactants is known, the results of a titration can be used to find the concentration of the other reactant.
• to calculate the chemical quantities in titrations involving concentrations (in moles or mass per unit volume) and masses.
• Acids and alkalis are classified by the extent of their ionisation in water. − A strong acid or alkali is one that is completely ionised in water. Examples of strong acids are hydrochloric, sulfuric and nitric acids.
• The volumes of acid and alkali solutions that react with each other can be measured by titration using a suitable indicator: − strong acid + strong alkali – any acid-base indicator
• − strong acid + weak alkali – methyl orange indicator
• − weak acid + strong alkali – phenolphthalein indicator.

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