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RP2: Enthalpy Change

Measurement of an enthalpy change using calorimetry (neutralisation, combustion, or reaction)

Required PracticalAQAA-Level

๐Ÿ”ฌ Equipment Required

  • Polystyrene cup with lid (calorimeter)
  • Thermometer (0.2ยฐC precision)
  • Measuring cylinder
  • Balance
  • Acids and alkalis or reactants
  • Stopwatch
  • Stirring rod
  • Graph paper for extrapolation

๐Ÿฆบ Safety Precautions

  • Wear safety glasses
  • Exothermic reactions can cause temperature to rise rapidly
  • Some reactants are corrosive
  • Handle hot solutions with care

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About RP2: Enthalpy Change

RP2: Enthalpy Change is a required practical for AQA A-Level Chemistry. This practical measurement of an enthalpy change using calorimetry (neutralisation, combustion, or reaction)

Students are expected to understand the method, identify and control variables, use appropriate equipment, analyse results, draw graphs, identify sources of error, suggest improvements, and consider safety precautions.

Questions on required practicals frequently appear in AQA A-Level Chemistry exams and can be worth significant marks. Practice with our AI-generated questions to master this practical.

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