Hydrogen reacts with fluorine: . Bond energies in kJ/mol are H-H 436, F-F 158 and H-F 562.
Calculate the overall energy change for the equation as written.
[3 marks]Edexcel GCSE Combined Science · Higher · Chemistry Paper 2
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This is our AQA Combined Science Trilogy (8464) course. It teaches the content Edexcel 1SC0 shares with it; our questions follow AQA's layout.
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Edexcel GCSE Combined Science Higher, Chemistry Paper 2
- 1SC0/2CH
- 1 hour 10 minutes
- 60 marks
- Key concepts, groups in the periodic table, rates and energy changes, fuels and Earth science
6 papers · 360 marks. Each paper tests its own topics. Topic 1, the key concepts, can come up on both papers in a science. Questions here are original practice, not past papers.