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Chemistry 5070 · Cambridge (CAIE) O Level
Energy Changes
3 past-paper questions on Energy Changes · examined 2021–2022.
20221 question
5070/12 · O/N · Q19 [1]Sign up to mark my answer →
Nitrogen oxides may form in the atmosphere during lightning activity. N2 + O2 → 2NO The reaction is endothermic. Which energy profile diagram is correct for this reaction?
20212 questions
5070/22 · O/N · Q6(a) [2]Sign up to mark my answer →
Complete the energy profile diagram for this reaction. Label reactants, products and ∆H.
5070/22 · O/N · Q6(b) [2]Sign up to mark my answer →
Explain, in terms of bond breaking and bond forming, why the reaction is endothermic.
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