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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 31

The reaction between citric acid and sodium hydrogencarbonate is endothermic.

Explain, in terms of bond breaking and bond forming, why this reaction is endothermic.

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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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