From Paper 1, Higher
Explain the difference between exothermic and endothermic reactions, with an example of each.
From Paper 1, Higher
Use the bond energies (kJ/mol) H–H 436, Cl–Cl 243, H–Cl 432 to calculate the energy change for H₂ + Cl₂ → 2HCl.
From Paper 1, Higher
Use the bond energies (kJ/mol) H–H 436, O=O 498, O–H 464 to calculate the energy change for 2H₂ + O₂ → 2H₂O.
From Paper 1, Higher
Sketch and describe a reaction profile for an exothermic reaction.
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This paper is written by Plasmo in the style of the AQA GCSE Chemistry exam. It is not a past paper and is not produced or endorsed by the exam board.