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The reaction equation is p 2 + 3 cl 2 → 2 pcl 3. H2 (g) + f2 (g). Calculate the energy change for the reaction and deduce whether it is exothermic or endothermic. Instant.
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Web bond energy worksheet answers 1. Chemistry sl 97% (38) 12. A) calculate the energy change for the reaction b) state whether the reaction is exothermic or endothermic and explain why in terms of. A).
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Written for legacy aqa c3.3.1 but also useful for the c5.5.1.3 of the 2018 gcse (the energy change of reactions) and probably some other exam boards too! A) calculate the energy change for the reaction b) state whether the reaction is exothermic or endothermic and explain why in terms of. A) calculate the energy required to break the bonds in the reactants b) calculate the energy released when the bonds in products are made. This is a lesson designed for rapid delivery but with deep understanding.
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