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8.2 Heat energy changes in chemical reactions

8.2 Heat energy changes in chemical reactions

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Question 40

A student carries out an experiment to measure the temperature change when different volumes of sodium hydroxide solution are added to dilute hydrochloric acid.

The method for the experiment is:

  • Measure 25 cm3 of dilute hydrochloric acid and pour into a container
  • Record the initial temperature of the acid
  • Add 25 cm3 of sodium hydroxide solution
  • Stir the mixture and record the maximum temperature reached

State a suitable container to use for the reaction mixture in this experiment to minimize heat loss.

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Markscheme

8.2 Heat energy changes in chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /8.2 Heat energy changes in chemical reactions

94 exam-style questions on Edexcel GCSE Chemistry 8.2 Heat energy changes in chemical reactions, covering 8.2.1 Exothermic and endothermic changes, 8.2.2 Bond breaking, bond making and overall energy change, 8.2.3 Calculating energy change from bond energies, and 8.2.4 Activation energy and reaction profiles. Each one has a worked solution and a mark scheme showing where the marks go.

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